MARS Authority Control

Automated Services for Libraries, Authority Control, Machine Matching, and Marcadia

Browsing Posts in MARC

Sometimes a national authority record just lacks some of the key information that your library needs. Maybe it’s an important cross-reference, a note, or some sort of field identifier. If you just receive the latest Library of Congress authority, for example, you could lose all that hard work that you and your staff have gone through to find the information and add it to your authorities.

If you’ve added information to some authorities that need to be preserved, we must have a way to retain it here so we can transfer the information to any future LC updates. Now that you’ve had time to see a need for it, we can get things set up.
This section is found in your Profile, Step 3, Question 11 (See this section).  It’s pretty short – shorter than I was thinking.  Basically you just need to mark the radial button and indicate what the $5 will be.  Here’s a (hopefully better) explanation of what I was trying to explain:

Say you have an authority to which you’ve added a local 500 see-also reference, and maybe you’ve modified an 022 and added a 670 note.  Say you want to preserve that 500, the modified 022 and the 670 field no matter what.  If you add a $5[code] to the end of those 3 fields and send us a copy of the authority, we can then take those 3 fields and put them into a table here, along with the authority's control number.  Then the next time LC updates that authority our system will match the control number with the table, find the fields that need to be preserved and add them to the updated authority we'll be sending to you.  When you load the authority back into your system it will overwrite the one you've already got, but it'll be okay because the fields you need preserved will be in the new record.  Here's an example of what I mean about marking the fields (I made up some of the info in this example - it's pretty bad - please forgive):

001    __    n  00001621
003    __    DLC
005    __    20001227110358.0
008    __    000204n| acannaabn          |n aaa
010    __    $an  00001621
022    __    $a0743-1643$l0743-1643$5SYM
040    __    $aDLC$beng$cDLC$dDLC
100    1_    $aHester, D. Micah
500    1_    $aAndrews, Joseph$5SYM
670    __    $aComputers and ethics in the cyberage, 2001:$bCIP t.p. (D. Micah Hester)
670    __    $aCommunity as healing, 2001: CIP t.p. (D. Micah Hester) data sheet, etc. (b. Jan. 16, 1966; Ph.D., asst. prof. of Biomedical Ethics, School of Medicine, Mercer Univ., Macon, Ga.)
670    __    $aCommunity as healing, 2001: CIP t.p. (Joseph Andrews, co-author)$5SYM

The bolded stuff in the 022, 500 and 670 is the info "added" and the red info is the code you should put on the field so we know it's what you want preserved.  I hope that all makes sense.  :-)

To get this going you need to do 3 things:

(1)  Decide what kind of a code you want in that $5, and then add it to all the fields in all the authorities you want preserved.  Most of our other clients just use a version of their library code ... for example, $5SYM.  But you can use whatever you'd like - just as long as we know what it is;
(2)  Send us a copy of the modified authorities so we can create a table;
(3)  Also send us a list of the fields you want preserved.  Example:  "We've modified some 050s, 022s, 400s, 500s, 670s - please preserve these tags if they have a $5SYM."

And that's pretty much it.  Your fields will be preserved every time we receive an update from LC.

If any of this seems unclear or if you have any questions at all, please don't hesitate to ask.

Thanks to our project manager for writing that up. Preserving fields is one of the services many of our libraries find most useful, and we have even more options than listed above when it comes to preserving your data for cases where adding a $5 would be unreasonable or impossible. so feel free to talk to on of our project managers about how we can help you with your situation.

Karen, our RDA Librarian, provided me with a fascinating report on recent changes to MARC, in many instances to accommodate the additional information in RDA. Here’s what she had to say.

Now that MARC21 Update 11 has been published, I’ve done through both the Bibliographic format standards and the Authority format standards and made a list of all the changes made to them from 2008 to the present.  They are listed by tag, with the Bibliographic format changes first, then the Authority format changes listed.  I have included the link to the tag description in the MARC21 Standards.  Also, after each change I’ve given the link to the MARBI proposal for that change in case you would like to see the reasoning behind it.  These will have the word marbi in the link and are directly after the actual change

Changes made to directly or indirectly accommodate RDA are marked with an *.  For more information on how RDA is affecting MARC21 see the document “RDA in MARC” found on the MARC21 Standards home page:  http://www.loc.gov/marc/RDAinMARC29.html

I hope you find this helpful.  Please feel free to point out any that I have missed.

Bibliographic format changes by field as of Mar. 2010

*Leader/18 – Descriptive cataloging form   http://www.loc.gov/marc/bibliographic/bdleader.html

Note: will be coded i with RDA

http://www.loc.gov/marc/RDAinMARC29.html

*007/01 – Electronic Resource (007/00=c)  http://www.loc.gov/marc/bibliographic/bd007g.html

New codes defined [2009]

d – disc, type unspecified

e – disc cartridge, type unspecified

k – computer card

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*007/01 – Projected Graphic (007/00=g)  http://www.loc.gov/marc/bibliographic/bd007g.html

Redefined code: [2009]

f – other or unspecified type of filmstrip (changed from Other type of filmstrip)

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*007/01 – Microform (007/00=h)  http://www.loc.gov/marc/bibliographic/bd007h.html

New codes defined: [2009]

j – microfilm roll

http://www.loc.gov/marc/marbi/2009/2009-06-3.html

h – microfilm slip

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*007/01 – Nonprojected Graphic (007/00=k)  http://www.loc.gov/marc/bibliographic/bd007k.html

New codes defined: [2009]

a – activity card

k – poster

p – postcard

q – icon

r – radiograph

s – study print

v – photograph, type unspecified

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*007/01 – Motion Picture (007/00=m)  http://www.loc.gov/marc/bibliographic/bd007m.html

New code defined: [2009]

o – film roll

http://www.loc.gov/marc/marbi/2009/2009-06-3.html

*007/04 – Map (007/00=a)  http://www.loc.gov/marc/bibliographic/bd007a.html

*007/04 – Globe (007/00=d)  http://www.loc.gov/marc/bibliographic/bd007d.html

*007/04 – Nonprojected Graphic (007/00=k)  http://www.loc.gov/marc/bibliographic/bd007k.html

New codes defined: [2009]

i – plastic

l – vinyl

n – vellum

v – leather

w – parchment

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

007/04 – Videorecording (007/00=v)  http://www.loc.gov/marc/bibliographic/bd007v.html

New code defined: [2008]

s – Blu-ray disc

http://www.loc.gov/marc/marbi/2008/2008-09.html

*007/05 – Nonprojected Graphic (007/00=k)  http://www.loc.gov/marc/bibliographic/bd007k.html

New codes defined: [2009]

i – Plastic

l – Vinyl

n – Vellum

v – Leather

w – Parchment

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

008/18-19 & 006/01-02 – Music – Form of Composition (also valid in field 047 – Form of Musical Composition Code)  http://www.loc.gov/marc/bibliographic/bd008m.html

New codes defined: [2009]

za – Zarzuelas

fl – Flamenco

vi – Villancicos

tl – teatro lirico

http://www.loc.gov/marc/marbi/2009/2009-09.html

*008/20 & 006/03 – Music – Format of Music http://www.loc.gov/marc/bibliographic/bd008m.html

New codes defined: [2009]

h – chorus score

i – condensed score

j – performer-conductor part

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

008/23 & 006/06 – Books – Form of item  http://www.loc.gov/marc/bibliographic/bd008b.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/22 & 006/05 – Continuing Resources – Form of original item http://www.loc.gov/marc/bibliographic/bd008s.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/23 & 006/06 – Continuing Resources – Form of item  http://www.loc.gov/marc/bibliographic/bd008s.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/23 & 006/06 – Computer File – Form of item http://www.loc.gov/marc/bibliographic/bd008c.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/22-23 & 006/05-06 – Maps format – Projection  http://www.loc.gov/marc/bibliographic/bd008p.html

New codes defined: [2009]

bk – Krovak

bl – Cassini-Soldner

http://www.loc.gov/marc/marbi/2009/2009-04.html

008/23 & 006/06 – Music – Form of item  http://www.loc.gov/marc/bibliographic/bd008m.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

00823 & 006/06 – Mixed Materials – Form of item  http://www.loc.gov/marc/bibliographic/bd008x.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/24-27 & 006/07-10 – Books – Nature of content  http://www.loc.gov/marc/bibliographic/bd008b.html

New codes defined: [2008]

y – Yearbooks.  -  made obsolete in 1988, but is now being redefined

2 – Offprints

5 – Calendars

6 – Comics/graphic novels  – this replaces 008/33 and 006/16 code c (comic strip)

http://www.loc.gov/marc/marbi/2008/2008-04.html

008/24 & 006/07 – Continuing Resources – Nature of Entire Work  http://www.loc.gov/marc/bibliographic/bd008s.html

New codes defined: [2008]

y – Yearbooks – this code was made obsolete in 1988, but is now being redefined

5 – Calendars

6 – Comics/graphic

http://www.loc.gov/marc/marbi/2008/2008-04.html

008/25-27 & 006/08-10 – Continuing Resources – Nature of contents  http://www.loc.gov/marc/bibliographic/bd008s.html

New codes defined: [2008]

y – Yearbooks

5 – Calendars

6 – Comics/graphic novels

http://www.loc.gov/marc/marbi/2008/2008-04.html

008/29 & 006/12 – Map – Form of item  http://www.loc.gov/marc/bibliographic/bd008p.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/29 & 006/12 – Visual Materials – Form of item http://www.loc.gov/marc/bibliographic/bd008v.html

New codes defined: [2010]

o – Online

q – Direct electronic

http://www.loc.gov/marc/marbi/2010/2010-01.html

008/33 & 006/16 – Books format – Literary Form   http://www.loc.gov/marc/bibliographic/bd008b.html

Obsolete code: [2008]

c – Comic strips – made obsolete (replaced by a code 6 in 008/24-27 or 006/7-10 for Books format.)

http://www.loc.gov/marc/marbi/2008/2008-04.html .

017 – Copyright or Legal Deposit Number   http://www.loc.gov/marc/bibliographic/bd017.html

New subfield: [2008]

$z – Canceled/invalid copyright or legal deposit number (R)  [2008]

http://www.loc.gov/marc/marbi/2008/2008-08.html

*033 – Date/Time and Place of an Event   http://www.loc.gov/marc/bibliographic/bd033.html

New subfields defined: [2010]

$p – Place of event

$0 – Record control number

$2 – Source of term

http://www.loc.gov/marc/marbi/2010/2010-03.html

034 – Coded Cartographic Mathematical Data http://www.loc.gov/marc/bibliographic/bd034.html

New subfield: [2010]

$3 – Materials specified

http://www.loc.gov/marc/marbi/2010/2010-05.html

*040 – Cataloging Source http://www.loc.gov/marc/bibliographic/bd040.html

Subfield made repeatable [2010]

$e – Description conventions

code “rda” added to the MARC code list for Descriptive Conventions to indicate the use of the RDA rules for description. Leader/18 will be coded i with RDA.

041 – Language Code   http://www.loc.gov/marc/bibliographic/bd041.html

New first indicator [2008]

# – No information provided – Formerly undefined

http://www.loc.gov/marc/marbi/2008/2008-03.html

080 – Universal Decimal Classification Number http://www.loc.gov/marc/bibliographic/bd080.html

Redefined Indicator 1 – Type of edition – Prior to 2009 undefined
# – No information provided
0 – Full
1 – Abridged

http://www.loc.gov/marc/marbi/2009/2009-03.html

082 – Dewey Decimal Classification Number   http://www.loc.gov/marc/bibliographic/bd082.html

New subfields defined:  [2008]

$m – Standard or optional designation (NR)  code values:

a  – Standard

b – Optional

$q – Assigning agency (NR)

http://www.loc.gov/marc/marbi/2008/2008-01.html

083 – Additional Dewey Decimal Classification Number  http://www.loc.gov/marc/bibliographic/bd083.html

New field: [2008]

http://www.loc.gov/marc/marbi/2008/2008-01.html

http://www.loc.gov/marc/marbi/2008/2008-01.html#proposal01-5

085 – Synthesized Classification Number Components   http://www.loc.gov/marc/bibliographic/bd085.html

New field: [2008]

http://www.loc.gov/marc/marbi/2008/2008-01.html

http://www.loc.gov/marc/marbi/2008/2008-01.html#proposal01-6

257 – Country of Producing Entity   http://www.loc.gov/marc/bibliographic/bd257.html

Removed ‘for Archival Films’ from title.  Made tag repeatable.

Subfield redefined: [2009]

$a – Country of producing entity – subfield renamed & made repeatable

New subfield defined: [2009]

$2 –  Source

http://www.loc.gov/marc/marbi/2009/2009-08.html

*336 – Content Type   http://www.loc.gov/marc/bibliographic/bd336.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*337 – Media Type   http://www.loc.gov/marc/bibliographic/bd337.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

*338 – Carrier Type   http://www.loc.gov/marc/bibliographic/bd338.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-2.html

New code under $b

ur – object

http://www.loc.gov/marc/marbi/2009/2009-06-3.html

*380 – Form of Work  http://www.loc.gov/marc/bibliographic/bd380.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

*381 – Other Distinguishing Characteristics of Work or Expression   http://www.loc.gov/marc/bibliographic/bd381.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

*382 – Medium of Performance   http://www.loc.gov/marc/bibliographic/bd382.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

*383 – Numeric Designation of a Musical Work  http://www.loc.gov/marc/bibliographic/bd383.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

*384 – Key    http://www.loc.gov/marc/bibliographic/bd384.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

440 – Series Statement/Added Entry – Title

Field made obsolete  http://www.loc.gov/marc/bibliographic/bd440.htm – this link contains instructions for conversion to appropriate 490/830 fields.

http://www.loc.gov/marc/marbi/2008/2008-07.html

490 – Series Statement   http://www.loc.gov/marc/bibliographic/bd490.html

1st indicator redefined – Series traced, formerly Series traced differently

http://www.loc.gov/marc/marbi/2008/2008-07.html

Subfield redefined:

$x – made repeatable

http://www.loc.gov/marc/marbi/2009/2009-06-2.html

New subfield defined:

$3 – Materials specified

http://www.loc.gov/marc/marbi/2008/2008-06.html

502 – Dissertation Note   http://www.loc.gov/marc/bibliographic/bd502.html

New subfields defined: [2008]

$b – Degree type

$c – Name of granting institution

$c – Year degree granted

$g – Miscellaneous information

$o – Dissertation identifier

http://www.loc.gov/marc/marbi/2008/2008-05-4.html

510 – Citation/References Note   http://www.loc.gov/marc/bibliographic/bd510.html

New subfield defined:

$u – Uniform Resource Identifier (R)

http://www.loc.gov/marc/marbi/2009/2009-05.html

*518 – Date/Time and Place of an Event Note http://www.loc.gov/marc/bibliographic/bd518.html

New subfields defined: [2010]

$d – Date of event

$o – Other event information

$p – Place of event

$0 – Record control number

$2 – Source of term

http://www.loc.gov/marc/marbi/2010/2010-03.html

534 – Original Version Note   http://www.loc.gov/marc/bibliographic/bd534.html

New subfields:

$o – Other resource identifier (R) [2008]

http://www.loc.gov/marc/marbi/2008/2008-10.html

$3 – Materials specified [2009]

http://www.loc.gov/marc/marbi/2009/2009-10.html

542 – Information Relating to Copyright Status   http://www.loc.gov/marc/bibliographic/bd542.html

New field: [2008]

http://www.loc.gov/marc/marbi/2008/2008-02.html

588 – Source of Description Note   http://www.loc.gov/marc/bibliographic/bd588.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-07.html

*700, 710, 711, 730 –    http://www.loc.gov/marc/bibliographic/bd70x75x.html

New subfield: [2009] (see X00, X10, X11 sections for description)

$i – Relationship information

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

*760, 762, 765, 767, 770, 772, 773, 774, 775, 776, 777, 780, 785, 786, 787 – Linking Entries   http://www.loc.gov/marc/bibliographic/bd76x78x.html

Subfields redefined [2009]

$g – Related parts (R) – renamed from Relationship information text

$i – Relationship information (R) - renamed from Display text and made repeatable

New subfield defined [2009]

$4 – Relationship code (added for RDA Appendix J)

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

*787 – Other Relationship Entry   http://www.loc.gov/marc/bibliographic/bd787.html

Renamed from Nonspecific Relationship Entry [2009]

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

800, 810, 811, 830 – Series Added Entries   http://www.loc.gov/marc/bibliographic/bd80x83x.html

New subfields defined: [2008]

$x – International Standard Serial Number

$3 – Materials specified

http://www.loc.gov/marc/marbi/2008/2008-06.html

$5 – Institution to which field applies [2010]

http://www.loc.gov/marc/marbi/2010/2010-02.html

*New Subfield – $0 – Authority Record Control Number

Added to the following fields

100, 110, 111, 130, 240, 600, 610, 611, 630, 648, 650, 651, 654, 655, 656, 657, 662, 700,                                     710, 711, 730, 752, 754, 800, 810, 811, 830

http://www.loc.gov/marc/marbi/2007/2007-06.html#p1

Authority format changes by field as of Mar. 2010

034 – Coded Cartographic Mathematical Data   http://www.loc.gov/marc/authority/ad034.html

New subfield codes: [2010]

$3 – Materials specified

http://www.loc.gov/marc/marbi/2010/2010-05.html

040 – Cataloging Source http://www.loc.gov/marc/authority/ad040.html

$e – Description conventions – made repeatable [2010]

code “rda” added to http://www.loc.gov/marc/relators/reladesc.html

see http://www.loc.gov/marc/RDAinMARC29.html

046 – Special Coded Dates    http://www.loc.gov/marc/authority/ad046.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

New subfield codes [2010]

$k – Beginning or single date created

$l – Ending date created

http://www.loc.gov/marc/marbi/2010/2010-04.html

080 – Universal Decimal Classification Number http://www.loc.gov/marc/authority/ad080.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-03.html

083 – Dewey Decimal Classification Number   http://www.loc.gov/marc/authority/ad083.html

New subfield: [2008]

$y – Table sequence number for internal subarrangement or add table

http://www.loc.gov/marc/marbi/2008/2008-01.html#proposal01-1

336 – Content Type    http://www.loc.gov/marc/authority/ad336.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-2.html – proposal

370 – Associated Place   http://www.loc.gov/marc/authority/ad370.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

371 – Address   http://www.loc.gov/marc/authority/ad371.html

New field [2009] (see Marc standards for description)

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

372 – Field of Activity   http://www.loc.gov/marc/authority/ad370.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

373 – Affiliation   http://www.loc.gov/marc/authority/ad373.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

374 – Occupation   http://www.loc.gov/marc/authority/ad374.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

375 – Gender   http://www.loc.gov/marc/authority/ad375.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

376 – Family Information   http://www.loc.gov/marc/authority/ad376.html

New field: ([2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

377 – Associated Language   http://www.loc.gov/marc/authority/ad377.html

New field: [2009]

http://www.loc.gov/marc/marbi/2009/2009-01-1.html

380 – Form of Work http://www.loc.gov/marc/authority/ad380.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

381 – Other Distinguishing Characteristics of Work or Expression http://www.loc.gov/marc/authority/ad381.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

382 – Medium of Performance http://www.loc.gov/marc/authority/ad382.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

383 – Numeric Designation of Musical Work http://www.loc.gov/marc/authority/ad383.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

384 – Key http://www.loc.gov/marc/authority/ad384.html

New field: [2010]

http://www.loc.gov/marc/marbi/2010/2010-04.html

4XX, 5XX –

Subfield redefined (adjusted) [2009]

$i – Relationship information (done to accommodate RDA app. K and J)

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

New subfield

$4 – Relationship code [2009]

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

New subfield codes

$w/0 – r – Relationship designation in $i or $4 [2009]

http://www.loc.gov/marc/marbi/2009/2009-06-1.html

See Tracings and References–General Information -http://www.loc.gov/marc/authority/adtracing.html for instructions on using these subfields.

We’re excited to announce that the 300 field validation that we’ve been working on is now in place and working.  We add this to the hundreds of other corrections and validations that we make to bibliographic records as we process them. Judy, one of our Project Managers, explains the new process:

In an effort to continue improving our bibliographic validation services, we’ve been writing some cleanup steps for the 300 field.  Nothing drastic of course — just some “straightening out” changes.  The cleanup takes place only on records marked with ‘a’ in leader byte 6 … non-print bibs such as media, electronic resources, microforms, etc. are left as-is.  Here’s a list of what the programming will do:

  • * 300 $a = ‘unp.’ [or] ‘n.p.’ is changed to ’1 v. (unpaged)’
  • 300 $a = a comma is added to #### page numbers if missing (ex.: 5332 p. becomes 5,332 p.)
  • 300 $a = ‘l.’ is changed to ‘leaves’
  • 300 $a = ‘approx.’ is changed to ‘ca.’
  • 300 $a = preliminary leaves and it’s abbreviation (p.l.) are removed (ex.: 4 p.l., xv, 312 p. = xv, 312 p.)
  • 300 $a = ‘unnumbered’ is removed and brackets added (ex.: 48 unnumbered leaves = [48] leaves)
  • If the p. is up against the :$b or the illustrative matter is up against the ;$c we add a space to separate
  • 300 $a = Missing periods are added to ‘p’ (ex.: 135p. = 135 p. )
  • 300 $b = The illustrative matter is rearranged to be in correct order
  • 300 $b = Obsolete illustrative matter is replaced with ‘ill.’ (ex.: ‘tables’ or “fronts.’ = ‘ill.’)
  • 300 $b = If ‘ill.’ is followed by the parenthetical illustrative matter, ‘ill.’ is dropped and the parenthetical matter remains (example: $bill. (ports.) = $bports.)
  • 300 $b = illus. is changed to ill.
  • Adds missing semicolon before $c
  • Adds ;$ccm. if missing from 300 field
  • [various pagings] = changes brackets to parentheses
  • If there is no 300 and the record is a book, the default of $ap. ;$ccm. is added
  • If there is numbered plate info in the $b that is moved to the $a – if plate designation is not numbered, it’s deleted

As with any of validation rules, these are optional, and if necessary, we can work with you to develop exactly what you’d like. These rules are now being included by default in our processing. We hope you find them useful!

Last week we talked a little bit about the history of how series have been handled, but what is series authority control? Of all the types of Authority Control (Names, Subjects, Series) series is likely the most complex aspect and can be quite overwhelming for both newcomers and veterans of Authority Control. Our Authority Librarian, Karen, has once again come to our aid to help explain what a series is, and how Authority Control works with series.

A series is defined by AACR2 as a group of separate items related to one another by the fact that each bears, in addition to its own title proper, a collective title applying to the group as a whole.  A series under authority control uses a controlled or unique chosen access point for the collective title of a series in the analytic bibliographic records.

Series authority work is the process of controlling those collective titles through the use of authority records.  Series authority work is done for the same reasons as name authority work; that is first, to create a single form of the series title which will collocate records so that the user can find all the records related to that resource; and second to create a unique form of the series title which will distinguish records for one resource from those for a different resource.  Uniqueness is especially important since many series have the same or similar titles.

There are several decisions that need to be made to control a series.  These decisions should be based on a standard such as AACR2.

The first decision is to decide which form of the series title will be used as the authorized form.  A single, unique form of the title needs to be chosen often from among several variant forms.  Then that decision needs to be recorded.  Three possibilities for this include:

  • Use the bibliographic record for the resource used for the series data to record the authorized form.
  • Create an alphabetic listing of series in the library.
  • Use a Series Authority Record  (SAR)

The SAR provides the best method for access, and can also contain a lot of other valuable information about the series.  The authority record can be on a card, or most commonly now, a machine-readable record.  More on SAR’s below.

The second decision to make is how the series will be treated.  How will you handle the parts of the series that come in to your institution?  A couple of points to consider are:

  • Analyze or not
  • Class together or separately

The third decision is whether to trace the title or not.  This means deciding whether to use the access point in your database or catalog.

It is important that these decisions be recorded because not all series will be handled in the same way.  Actions taken for subsequent acquisitions need to be consistent.  The most common way to record series authority records is a MARC 21 record format.  Since MARC21 is a machine-readable format, the records can be updated at any stage in the workflow.  They are based on standards and can be easily shared with the greater library community.

A Series Authority Record (SAR) is the means to generate consistency in any database (or catalog) and allow the retrieval of all the series in a logical display.  The SAR should serve three functions:

  1. Provide a unique and authoritative heading.  The record reflects the chosen form that will be used as an access point for the series for all bibliographic records containing references to the series.  Uniqueness promotes consistency in the database and allows the retrieval of all analytics in a predictable display.  Several fields in a MARC format SAR provide the required information.  The 1xx field is used to record the chosen form of the series title.  This is the authorized heading.  Related to the function of the 1xx to record the chosen form, the 4xx fields are used to record variant forms of the heading (series title) that were not chosen as the authorized form.  The 642 field provides the style of numbering to be used with the series if it is numbered and also provides consistency.
  2. Provide identification – the record should provide enough information to identify the resource used in doing the authority work for a particular series, and distinguish this series from all others.  The 1xx and 4xx fields are also part of this function.  Other fields providing identification are:

643 –   contains the place and publisher of the series

670 –   contains the time period of publication

642 –   numbering example taken from the source listed in the first 670 field.

667 –   this is a note field that is used to record other information that is valuable,  but does not fit into other fields.

  1. Show the treatment – the SAR should be a record of the decisions regarding analysis, tracing, and classification.  It can have both local and other decisions.  Fields used for this function are:

050-090 –  These fields record the call number chosen for the series if the decision is to class holdings together.

644 –   this field records the analysis decision

645 –   this field records the tracing decision

646 –   this field records the classification decision (see fields 050-090)

One other type of SAR can actually be for something that is not a series.  Many resources have phrases or other character strings that will not be considered as a series.  Although a SAR is not required to record this conclusion, providing one with the documentation for the decision to not consider it a series will create consistency for questionable cases.  It will also save time in the future by avoiding having to make the same decision over and over again as other materials come in.

In a MARC21 bibliographic record the 490 field is used to record the transcription of the series from the item.  In this field, the series appears exactly like it does on the item.  A 500 note field may also be used for the series.  The 8xx fields (800, 810, 811, and 830) are used to provide a tracing for the series when needed.  These fields will contain the authorized form of the series title.  This demonstrates the need for the authority work to provide consistency.  The series on items do not always appear the same way so there could be different headings in the 490 fields for the same series.  But by having one authorized form, the 8xx fields for that series will always have the exact same heading.  Without this consistency, it could be very difficult to find all the parts of the same series in the catalog or database.

Series authority records can provide effective management for the bibliographic headings and can also provide physical control of series holdings in the library. By creating series authority records and maintaining a database of the records (an authority file) consistency will be maintained.  Time and effort will be saved in the future.  As new materials come in, the work on the series and the decisions regarding it will not have to be done over and over again.

For a detailed explanation of Series authority work see the excellent power point presentation by Judith A. Kuhagen of the Cataloging Policy & Support Office at the Library of Congress.  http://library.ust.hk/info/other/feb2005/series.html Although this presentation is from 2005 and some of the LC policies and MARC tags talked about have changed, the process of making the decisions needed for series authority work in gone into in great detail.

For more information on the changes to series policies and MARC tags see the article “A Brief History of Series Authority Work”

For more information on using the MARC21 standards, see the MARC21 Format for Authority Data http://www.loc.gov/marc/authority/ecadhome.html and the MARC 21 Format for Bibliographic Data http://www.loc.gov/marc/bibliographic/ecbdhome.html

Our Authority Librarian, Karen, provided me with this extremely useful and detailed history of the way series entries are handled in both bibliographic records and authority records.

Series description has changed and evolved over time along with other descriptive cataloging practices.  Most changes have been realized in LC policies and standards as more libraries chose to follow LC practices.

Prior to Sept 1, 1989, the Library of Congress policy was to trace only some series.  They would create series authority records (SARs) for all series cataloged and record the tracing decisions on the SARs.

In the 1960’s LC developed the MARC format for the computerized storage and exchange of bibliographic information.  As series policies have changed, the MARC format fields dealing with series have also changed.

Up to 1978 when AACR2 was published (see below), MARC had the following fields defined for the input of series information:  (All definitions are from Its Marc http://itsmarc.com/crs/Bib1468.htm)

400 –   This field contains an author/title series statement in which the author portion is a personal name or a possessive pronoun that refers back to the name in the 100 main entry field in the record. Field 400 is both a series statement and a series added entry. When a 400 field is present, a corresponding 800 field is not used, since it would duplicate the 400 field

410 –   This field contains an author/title series statement in which the author portion is a corporate name or a pronoun representing it that refers back to a 110 field . Field 410 is both a series statement and a series added entry. When a 410 field is present, a corresponding 810 field is not used, since it would duplicate the 410 field.

411 -    This field contained an author/title series statement in which the author portion is a conference/meeting name or a pronoun representing it that refers back to a 111 field . Field 411 is both a series statement and a series added entry. When a 411 field is present, a corresponding 811 field is not used, since it would duplicate the 411 field.

The descriptions of the indicator values, subfields and input conventions associated with the 400, 410, 411 fields corresponded to those for the 100, 110, and 111 fields respectively, with the addition of subfields specifically for series:

$x – ISSN #

$v – Volume designation

440 –   This field contains a series statement consisting of a series title alone.  Used when the series statement and the controlled added entry form of the series title are the same. Field 440 is both a series statement and a series added entry.

490 –   This field contains a series statement for which no series added entry is to be made, or for which the series added entry is in a controlled form different from that which appears in the series statement. Field 490 does not serve as a series added entry. When field 490 is used and a series added entry is desired, both the series statement (field 490) and a corresponding series added entry (800-830 fields) are separately recorded in the bibliographic record.

800 –   This field contains an author/title series added entry in which the author portion is a personal name. It is used when the added entry form of a series is different from that in the corresponding series statement. An 800 field is usually justified by a series statement (field 490 ) or a general note (field 500 ) relating to the series.

810 –   This field contains an author/title series added entry in which the author portion is a corporate name. It is used when the added entry form of a series is different from that in the corresponding series statement. An 810 field is usually justified by a series statement (field 490 ) or a general note (field 500 ) relating to the series.

811 –   This field contains an author/title series added entry in which the author portion is a meeting or conference name. It is used when the added entry form of a series is different from that in the corresponding series statement. An 811 field is usually justified by a series statement (field 490 ) or a general note (field 500 ) relating to the series.

830 –   This field contains a title series added entry in which the entry of the series is a conventional title.  It is used when the added entry form of a series title is different from that in the corresponding series statement.

840 –   This field contains a title series added entry in which the entry of the series is under uniform title . It is used when the added entry form of a series title is different from that in the corresponding series statement.

All of the 8XX fields are justified by a series statement (field 490) or a general note (field 500 ) relating to the series.  No 8XX series added entry field was used in conjunction with a series statement in the 400-440 fields because each of these fields functions both as part of the bibliographic description and as a series added entry.  The indicator and subfield definitions for 8xx fields are the same as the corresponding 1xx fields, except for the addition of the $x (ISSN) and $v (numbering designation) subfields

In 1978 the second edition of the Anglo-American Cataloging Rules was published. Changes in the rules with the largest impact on series were the rules to formulate entries for personal, corporate, and meeting names, which made a separate distinction between the descriptive transcription and the form of entry.  So the new rules did not really provide for name/title series statements as part of the transcription.  Under these rules, the authorized form of the series (established in the authority file in Series Authority Record) did not always match the form found on the item.  So if the series were traced, it would need to be traced differently.

Library of Congress implemented AACR2 in January of 1981.  Eventually the MARC tags changed to accommodate the new cataloging rules.

The 440 and 490 fields were revised and used for the transcription of the series statement from the item.   Fields 400, 410, and 411 were no longer to be used for the transcription of the series from any type of material.

440 -   This field contains a series title statement when the series statement and the controlled added entry form of the series title are the same. Field 440 is both a series statement and a series added entry (title is traced). When a 440 field is present, a corresponding 830 field is not used since it would duplicate the 440 field.

490 –   This field contains a series statement for which no series added entry is to be made, or for which the series added entry is in a controlled form different from that which appears in the series statement. Field 490 does not serve as a series added entry. When field 490 is used and a series added entry is desired, both the series statement (field 490) and a corresponding series added entry (800-830 fields ) are separately recorded in the bibliographic record.

The 8XX fields were also revised to better accommodate the new rules.  The 800, 810, and 811 fields contain a name/title added entry used as a series added entry in which the entry of the series in under personal name, corporate name, or meeting name respectively, when the series statement is contained in field 490 (Series Statement) or field 500 (General Note) and a series added entry is required for the bibliographic record.  No 8XX series added entry field is used in conjunction with a series statement in the 400-440 fields because each field functions both as part of the bibliographic description and as a series added entry.  The indicator and subfield definitions for 8xx fields are the same as the corresponding 1xx fields, except for the addition of the $x (ISSN) and $v (numbering designation) subfields:

In 1988 fields 400, 410 and 411 were officially made obsolete in the CAN/MARC format.  They can still be used as local fields.  This left only the 440 and 490 as transcription fields.  Their definitions as well as the 8xx’s remained much the same.  Instructions are given to convert to 4xx/8xx as follows

MARC 21 conversion to current fields:

If indicator 2 is 0 in the 400, 410 or 411:

  • 4XX indicator 1 and all subfields except subfield $x convert to 8XX with same indicator 1 value and same subfields,
  • 4XX $t, $v, $x are also copied to 490 $a, $v, $x, respectively
  • 490 indicator 1 is set to 1.

If indicator 2 is 1 in the 400, 410 or 411:

  • 4XX indicator 1 and all subfields except subfields $a and $x convert to 8XX with same indicator 1 value and same subfields,
  • and all 1XX subfields are copied into the same 8XX, preceeding the subfields from the 4XX field,
  • and 4XX $t, $v, $x are also copied to 490 $a, $v, $x, respectively; 490 indicator 1 is set to 1.

On Sept. 1, 1989, Library of Congress implemented a policy to trace all series.  New series authority records showed the decision to trace.  When they needed to update a series, they would not go back and re-catalog the previous items.  The change in tracing decision would be recorded on the SAR using multiple 645 fields.

On June 1, 2006, the Library of Congress implemented its decision not to create/update series authority records and not to provide controlled series access points in its bibliographic records for resources in series.  This meant that in newly created bibliographic records for LC original cataloging (040 $a is solely “DLC”), the series statement will be given in a 490 0# field and LC will stop using 8xx fields.  This decision from LC was not well received by the cataloging community and even sparked a protest from LC catalogers

The Program for Cooperative Cataloging (PCC) will not follow this policy.  Members will continue to provide controlled series access on records and create and maintain series authority records through their BIBCO, NACO, and CONSER programs.  More details can be found under the PCC programs NACO, BIBCO, and CONSER, and in the PCC Series Statement http://www.loc.gov/catdir/pcc/seriesPCC.html.

LC will continue to support the PCC by deleting duplicate series records reported, answering questions if no research is needed, and coordinating and conducting series training.  In newly created CIP-partnered cataloging, in PCC member copy used for cataloging, and in non-PCC copy cataloging, existing series statements/access points will be accepted as is and “passed through.”  This will help prevent LC-issued records without series access points from overlaying records that have them in OCLC.

On June 6, 2008, MARBI (Machine-Readable Bibliographic Information) the interdivisional committee of the American Library Association that deals with MARC standards, approved the proposal to make field 440 (Series Statement/Added Entry-Title) obsolete in the MARC 21 Bibliographic Format.  This was done after much debate in the library community.  This decision leaves the 490 as the only field to record the transcription of the series statement from the item. The intention of the change is to resolve the long-standing problem of field 440 being both a descriptive field and a controlled access point.  The assumption is that separating the two functions will result in a more reliable description and easier maintenance through automated authority control over time.

This led to another change approved by MARBI:

In the 490 tag, the first indicator value ‘1’ has been redefined to:

1 – Series traced in 8XX field

When value “1″ is used, the appropriate field 800-830 is included in the bibliographic record to provide the series added entry using the authorized form even if that form matches the transcribed form in the 490 field.  It was felt that since there are now few space limitations in online systems, the duplication of the data in 490 and 8xx should not be a problem.  An 8XX field can still be justified by a both a series statement in the 490 field or a general note in a 500 note field.

At this same time a second MARC proposal was made and approved.  This proposal made two changes:

Added $x subfield (ISSN) to 8XX fields.

Added $3 (Materials specified) added to field 490 and 8xx fields

The Library of Congress approved these proposals on October 2, 2008.  They will continue to accept the 440 field in records, and will not be retrospectively changing any records to conform to these changes.

The library community has been somewhat divided on whether to implement these changes, some have, and some have not, or are still deciding.  Libraries always have the option to formulate policies to fit their own circumstances.

This is where series description stands as of July 2009.

———————————

References:

Website “Its MARC” The Library Corporation:  http://itsmarc.com/crs/Bib1468.htm

MARC21 Format for Bibliographic Data 1999 ed.  Library of Congress Network Development and Marc Standards Office:   http://www.loc.gov/marc/bibliographic/ecbdhome.html

MARC21 Format for Authority Data 1999 ed.  Library of Congress Network Development and Marc Standards Office:   http://www.loc.gov/marc/authority/ecadhome.html

Article “Series at the Library of Congress: June 1, 2006” on the Library of Congress website: http://www.loc.gov/catdir/cpso/series.html

What is Marcadia?

1 comment

Patricia Stelter, our Vice President of Bibliographic Services put together a really informative primer on what Marcadia is, and how it helps libraries. I thought I’d share what she had to say here.

Trying to get your materials cataloged with less staff? I’ve been in your shoes and I know the solution! Marcadia is exactly what you need in these lean times.

We partner with OCLC to provide Marcadia and it is one of the unique divisions that make up Automation Services here at Backstage Library Works. One of the many advantages of Marcadia is that you don’t need an OCLC membership to get select WorldCat records. Also, it doesn’t matter what type of library you work in –if you complete acquisitions and cataloging –we can help you!

Marcadia is an extraordinary automated cataloging service that matches brief records to WorldCat MARC records according to your specifications. Even if you have newly published materials we can take as little as one or two fields of information and return premium WorldCat records to you for a very affordable $1.75 per result.

I’ve been a Library Director and I know firsthand that patrons can sometimes be demanding and how I struggled to get items cataloged and available to them. If I had known about Backstage Library Works it would have made my life much easier and I would have been able to concentrate more on grant writing, starting my Friends of the Library group and providing needed outreach to my community!

In retrospect, these are experiences that I look back on, but for you that are struggling with today’s budget shortfalls and cutbacks Marcadia can even be more beneficial. You’ve lost cataloging staff? We can do the work for you and make your life easier!

We all know that catalogers have varying opinions on what constitutes a perfect record. With Marcadia you get the perfect record every time. You tell us exactly what you want, including your preferences for certain cataloging levels or records from regarded universities, and we deliver with great efficiency the same records that trained cataloging staff would choose.

Discover how Marcadia can make your life a little more idyllic. Define your perfect record and schedule your free test run today.

Patricia Stelter

VP Bibliographic Services

Backstage Library Works

We Need Your Input!

No comments

Judy, one of the project managers would like opinions from multiple librarians on a question we are facing right now. Here’s what she had to say.

Hello Everyone, we are looking for feedback from our community:

MARC Proposal No. 2008-06 requested that $x ISSN’s be allowed in 8XX fields (http://www.loc.gov/marc/marbi/2008/2008-06.html) and the proposal was approved by Library of Congress on October 2, 2008.  Just recently OCLC has decided to begin allowing $x too (see their July 2009 Technical Bulletin 257 found at:  http://www.oclc.org/support/documentation/worldcat/tb/257/default.htm.

With LC’s switch from 440 to 490 and our programming changes to accommodate this, many of you are now getting $x ISSN subfields in your Bibliographic 8XXs.  This has been causing some concern and at least in one scenario, it creates a problem situation as follows:

original bib headings:
490_1 $aSTI/PUB ;$v1343
490_1 $aSafety reports series,$x1020-6450 ;$vno. 58
830_0 $aSafety reports series ;$vno. 58.

after processing:
490_1 $aSTI/PUB ;$v1343
490_1 $aSafety reports series,$x1020-6450 ;$vno. 58
830_0 $aSafety reports series ;$vno. 58.
830_0 $aSafety reports series,$x1020-6450 ;$vno. 58.

The resulting 830s happened this way because the 8XXs must link up with 490-1′s.  The system assumes the first 8XX belongs to the first 490-1 so it retained “Safety report series ;$vno. 58.”  Since it “thought” there was no 8XX for the second 490-1 an 8XX was created for it.  Unfortunately it was the first 490-1 that was missing a linking 8XX.

What is your practice regarding 8XX $x?  Since this is now an allowable subfield and we follow LC procedures, what will this do to your system?

Your feedback would be very welcome and much appreciated. Feel free to comment on this blog or talk about it on our Forum at:  http://ac.bslw.com/community/forum/viewtopic.php?t=34

Thanks,
Judy

Last week we looked at the Anatomy of an Authority Record, but what if we look even deeper? Both Bibliographic and Authority records are essentially text, made up of characters formed either in MARC8 or UTF8. But what does that mean, and whats the difference?

MARC-8

The MARC-8 character set uses 8-bit characters, meaning it natively displays ASCII and ANSEL text. Because of the limitation of characters that this allows, the MARC-8 character set includes methods to extend the displayable characters. One method is to include both spacing base characters and nonspacing modifier characters (diacritics).

Spacing or nonspacing refers to cursor movement: a spacing character moves the cursor, a nonspacing character does not. A nonspacing character is always associated with a single spacing character, but multiple nonspacing characters may be associated with the same spacing character.

In MARC-8, when there is a nonspacing character, it precedes the associated spacing character: any cursor movement occurs after displaying the character. This method allows basic and extended Latin characters to be displayed using the default character set.

 Another method MARC-8 uses to extend the displayable characters is to use alternate character sets. This is done by using escape sequences, special character sequences containing codes to indicate which character set is being selected for display. Possible alternate sets include subscripts, superscripts, Hebrew, Cyrillic, Arabic, and Greek. Chinese, Japanese and Korean are also possible by this method using EACC character encodings for these characters. While this method allows for many additional characters to be used, it is still limited and somewhat burdensome.

 UTF-8

As computers needed to support a wider character set, many computer related companies formed a group to define the Unicode Standard. This standard is based on 16-bit characters. UTF-8 is a method of encoding these characters into sequences of from 1 to 3 bytes. Unicode, using the UTF-8 encoding, was accepted as an alternative character set for use in MARC records, with an initial limitation to using only the Unicode characters that have corresponding characters in the MARC-8 character set.

Decomposed

Unicode has definitions for nonspacing characters like MARC-8, except that the nonspacing character follows the character it modifies: cursor movement occurs before the character is displayed. Decomposed UTF-8 characters are similiar to MARC-8 diacritics, in which a base character is modified by one or more non-spacing characters. For example a base character ‘n’ with a non-spacing ‘~’ would combine to display ‘ñ’. Decomposed is also the current LC standard.

Precomposed

 Unicode also includes many precomposed characters. These are spacing characters that are the equivalent of one or more nonspacing characters and a spacing character. A precomposed ‘ñ’, instead of having a base character and an additional non-spacing diacritic mark would combine all those elements into one code which represents the character with the diacritic as a whole. This causes a more difficult normalization routine.

Normalization

To handle the various ways a composite character could be normalized, standardized normalization forms have been defined. These include NFD (Normalization Form Decomposed) and NFC (Normalization Form Composed). In NFD, every character that can be decomposed is converted to its most decomposed form following rules for canonical decomposition. In NFC, the characters are first decomposed as in NFD, then composed into precomposed (composite) forms following canonical rules.  This may result in the sequence of characters for a given character changing to an alternate, equivalent form.

Conclusion

Many library systems are moving from MARC-8 to UTF-8 character encodings. This is a good move because it gives you the ability to accurately reflect the data, while lessoning the possibility of error. Backstage Library Works can return data in MARC-8, or UTF-8 (decomposed or composed) form.

WHY IT’S A GOOD IDEA TO LOAD YOUR AUTHORITIES IN THE ORDER WE PROCESSED THEM

We have often had clients ask us in what order they should load their authorities, if they have several groups to load.  Perhaps you’ve found yourself in the situation where you haven’t loaded your last set of authority updates and now you’ve sent in new bibliographic records to be processed, or maybe your next scheduled update has arrived.  You find yourself looking at two or more batches of authorities and you wonder, “Does it really matter which goes first?”  Absolutely!  And here’s why:

 

    *  Say you had a scheduled authority update in December, but things went crazy busy and you haven’t had time to load those authorities yet.  Now it’s March and you have a large group of new bibliographic records that need processing, so you send them in.  Thinking you can save time by loading both the December updates and the bibliographic authorities at the same time, you wait for the new group to be returned.  But now … which to load first?  You should load the December updates first.  Example:

    *  You have a heading for Doe, John,$d1955-   and sometime last year LC updated that to Doe, John Joseph,$d1955- (and if we’re lucky, LC added the “old” heading as a 400 see-reference).  This changed authority would deliver with the December group you hadn’t loaded yet.

    *  Now you’ve sent in your bib records and in there is the heading for Doe, John,$d1955-  .  However, between December and today’s date LC decided to edit the record again and they put out a new authority with the new heading of: Doe, John J.,$d1955- (and still kept the original “old” heading of Doe, John,$d1955-  in a 400 see-reference tag).

    *  With the processed bibs you’d get back the very newest authority for Doe, John J.,$d1955-, which is what you’d want in your system.

    *  But if you decide to load the bibliographic records and associated authorities first and the December authority updates second, the middle version of Doe, John Joseph,$d1955-  (from the December updates) would overwrite the newest authority sent with the bibs, and you would be stuck with an older, not current LC version of this heading.

Which is why it’s always wisest to load oldest-to-newest, when you’re working with several projects at once.

Written by: Judy Archer

Underneath the MARC records that we all know and love is a somewhat cryptic structure that tells our systems how to read the record. Luckily, this structure rarely gets corrupted, but when it does, it’s good to have a basic understanding of how to read and understand a MARC Format.

The MARC format is a text based format, meaning you can open it with a text editor. It is probably a good idea to only open a few (or only one!) record in a text editor, because it’s very difficult to read otherwise.

Every MARC record starts with a leader, the leader gives your system information about the record, including how big it is and what type of a record it is. Next is what is called a directory. Just like a normal directory, it tells you what tags are in it, and where the data for each tag is located.

This is how a leader is defined for a Bibliographic Record:

Leader: 

Position | Description              | Explination
------------------------------------------
00-04 | Record Length               = This is how long the record is
05    | Record Status               = Is the record new, changed or deleted
06    | Type of record              = Authority, Book, Computer file, etc.
07    | Bibliographic level         = Monograph/Serial/etc.
08    | Type of control             = Archival or not
09    | Character coding scheme     = MARC8 or UTF8
10    | Indicator count             = # of indicators each tag has
11    | Subfield code count         = # of subfield codes that make up 1 subfield
12-16 | Base address of data        = The byte where actual record data begins
17    | Encoding level              = Level of encoding/cataloging
18    | Descriptive cataloging form = AACR2
19    | Multipart resource record level = # (blank)
20    | Length of the length-of-field = # of bytes to store how long each tag is
21    | Length of the starting-character-position = # of bytes to store where tag begins
22    | Length of the implementation-defined portion = Rarely used
23    | Undefined                   = Not used

Looking at a leader can be confusing, but it’s also the only way to find some problems.

Here is an example record, as it may appear on your screen:
001 __ 3180021
005 __ 20050216201852.0
008 __ 040805s2005    nyu      b    001 0 eng 
010 __ ▼a  2004018260
020 __ ▼a0415971675 (alk. paper)
035 __ ▼a(DLC)  2004018260
040 __ ▼aDLC▼cDLC▼dDLC▼dCaONFJC▼dOrLoB-B
043 __ ▼an-us—
050 00 ▼aPS374.H56▼bO73 2004
082 00 ▼a813/.5409358▼222
090 __ ▼aPS374.H56▼bO73 2005
100 1_ ▼aOrbán, Katalin.
245 10 ▼aEthical diversions :▼bthe post-holocaust narratives of Pynchon, Abish, DeLillo, and Spiegelman /▼cKatalin Orbán.
260 __ ▼aNew York :▼bRoutledge,▼c2005.
300 __ ▼aix, 209 p. ;▼c24 cm.
440 _0 ▼aLiterary criticism and cultural theory
504 __ ▼aIncludes bibliographical references (p. 193-205) and index.
505 00 ▼gCh. 1.▼t”Mauschwitz” : monsters, memory, and testimony — ▼gCh. 2.▼tFamiliarity and forgetfulness in Walter Abish’s fiction — ▼gCh. 3.▼tPinpricks on the Ars(e) Narrandi : liminality and oven-games in Gravity’s rainbow.
600 10 ▼aPynchon, Thomas▼xKnowledge▼xHolocaust, Jewish (1939-1945)
600 10 ▼aSpiegelman, Art▼xKnowledge▼xHolocaust, Jewish (1939-1945)
600 10 ▼aAbish, Walter▼xKnowledge▼xHolocaust, Jewish (1939-1945)
600 10 ▼aDeLillo, Don▼xKnowledge▼xHolocaust, Jewish (1939-1945)
650 _0 ▼aAmerican fiction▼y20th century▼xHistory and criticism.
650 _0 ▼aHolocaust, Jewish (1939-1945), in literature.
650 _0 ▼aJudaism and literature▼zUnited States▼xHistory▼y20th century.
650 _0 ▼aWorld War, 1939-1945▼zUnited States▼xLiterature and the war.
650 _0 ▼aEthics in literature.
650 _0 ▼aJews in literature.
852 0_ ▼bkr▼hPS374.H56▼iO73 2005
856 41 ▼3Table of contents▼uhttp://www.loc.gov/catdir/toc/ecip0421/2004018260.html
949 __ ▼aApproval▼b1628024-35▼c67.20▼d1▼i20027328▼jUSD▼tBook

Now, if we are to take a look at the actual MARC structure, it looks like this (when looking at an underlying MARC record, you may not be able to see all of the special characters like end of field and end of record marks, but they are there):

01872cam a2200397 a 450000100080000000500170000800800410002501000170006602000280008303500220011104000360013304300120016905000240018108200

210020509000240022610000210025024501180027126000340038930000250042344000430044850400640049150502240055560000620077960000

620084160000600090360000590096365000590102265000500108165000660113165000650119765000260126265000240128885200280131285600

7801340949005601418318002120050216201852.0040805s2005    nyu      b    001 0 eng    a  2004018260  a0415971675 (alk. paper)  a(DLC)  2004018260  aDLCcDLCdDLCdCaONFJCdOrLoB-B  an-us—00aPS374.H56bO73 200400a813/.5409358222  aPS374.H56bO73 20051 aOrbán, Katalin.10aEthical diversions :bthe post-holocaust narratives of Pynchon, Abish, DeLillo, and Spiegelman /cKatalin Orbán.  aNew York :bRoutledge,c2005.  aix, 209 p. ;c24 cm. 0aLiterary criticism and cultural theory  aIncludes bibliographical references (p. 193-205) and index.00gCh. 1.t”Mauschwitz” : monsters, memory, and testimony — gCh. 2.tFamiliarity and forgetfulness in Walter Abish’s fiction — gCh. 3.tPinpricks on the Ars(e) Narrandi : liminality and oven-games in Gravity’s rainbow.10aPynchon, ThomasxKnowledgexHolocaust, Jewish (1939-1945)10aSpiegelman, ArtxKnowledgexHolocaust, Jewish (1939-1945)10aAbish, WalterxKnowledgexHolocaust, Jewish (1939-1945)10aDeLillo, DonxKnowledgexHolocaust, Jewish (1939-1945) 0aAmerican fictiony20th centuryxHistory and criticism. 0aHolocaust, Jewish (1939-1945), in literature. 0aJudaism and literaturezUnited StatesxHistoryy20th century. 0aWorld War, 1939-1945zUnited StatesxLiterature and the war. 0aEthics in literature. 0aJews in literature.0 bkrhPS374.H56iO73 2005413Table of contentsuhttp://www.loc.gov/catdir/toc/ecip0421/2004018260.html  aApprovalb1628024-35c67.20d1i20027328jUSDtBook

And here is a sample analysis of this record:

Leader: 

Position | Description              | Data
------------------------------------------
00-04 | Record Length               = 01872 : confirmend in a hex editor the record is this length
05    | Record Status               = c
06    | Type of record              = a
07    | Bibliographic level         = m
08    | Type of control             = # (blank)
09    | Character coding scheme     = a
10    | Indicator count             = 2
11    | Subfield code count         = 2
12-16 | Base address of data        = 00397 : confirmed in hex editor this is correct
17    | Encoding level              = # (blank)
18    | Descriptive cataloging form = a
19    | Multipart resource record level = # (blank)
20    | Length of the length-of-field portion = 4
21    | Length of the starting-character-position portion = 5
22    | Length of the implementation-defined portion = 0
23    | Undefined                   = 0
Directory: 

Tag | Field length | Starting character position
001 0008 00000
005 0017 00008
008 0041 00025
010 0017 00066
020 0028 00083
035 0022 00111
040 0036 00133
043 0012 00169
050 0024 00181
082 0021 00205
090 0024 00226
100 0021 00250
245 0118 00271
260 0034 00389
300 0025 00423
440 0043 00448
504 0064 00491
505 0224 00555
600 0062 00779
600 0062 00841
600 0060 00903
600 0059 00963
650 0059 01022
650 0050 01081
650 0066 01131
650 0065 01197
650 0026 01262
650 0024 01288
852 0028 01312
856 0078 01340
949 0056 01418| (56+1418 = 1474) 1474 = Ending field terminator below

Fields:
(For our convenience in readin the record we have replaced certain non-displayed fields with graphical representations)
| = field terminator (also used to terminate the directory)
$ = subfield code delimiter
^ = record terminator
_ = utf8 characters have been replaced by an undersore so the postions line up in a non-hex display

3180021|20050216201852.0|040805s2005    nyu      b    001 0 eng  |  $a  2004018260|  $a0415971675 (alk. paper)|  $a(DLC)  2004018260|  $aDLC$cDLC$dDLC$dCaONFJC$dOrLoB-B|  $an-us—|00$aPS374.H56$bO73 2004|00$a813/.5409358$222|  $aPS374.H56$bO73 2005|1 $aOrb__n, Katalin.|10$aEthical diversions :$bthe post-holocaust narratives of Pynchon, Abish, DeLillo, and Spiegelman /$cKatalin Orb__n.|  $aNew York :$bRoutledge,$c2005.|  $aix, 209 p. ;$c24 cm.| 0$aLiterary criticism and cultural theory|  $aIncludes bibliographical references (p. 193-205) and index.|00$gCh. 1.$t”Mauschwitz” : monsters, memory, and testimony — $gCh. 2.$tFamiliarity and forgetfulness in Walter Abish’s fiction — $gCh. 3.$tPinpricks on the Ars(e) Narrandi : liminality and oven-games in Gravity’s rainbow.|10$aPynchon, Thomas$xKnowledge$xHolocaust, Jewish (1939-1945)|10$aSpiegelman, Art$xKnowledge$xHolocaust, Jewish (1939-1945)|10$aAbish, Walter$xKnowledge$xHolocaust, Jewish (1939-1945)|10$aDeLillo, Don$xKnowledge$xHolocaust, Jewish (1939-1945)| 0$aAmerican fiction$y20th century$xHistory and criticism.| 0$aHolocaust, Jewish (1939-1945), in literature.| 0$aJudaism and literature$zUnited States$xHistory$y20th century.| 0$aWorld War, 1939-1945$zUnited States$xLiterature and the war.| 0$aEthics in literature.| 0$aJews in literature.|0 $bkr$hPS374.H56$iO73 2005|41$3Table of contents$uhttp://www.loc.gov/catdir/toc/ecip0421/2004018260.html|  $aApproval$b1628024-35$c67.20$d1$i20027328$jUSD$tBook|^

Ending field terminator    = 1474
Record terminator position = 1475

Summary
———————————
Ending field position = 1475
Base address of data  = 397

1475 + 397 = 1872 (Record Length)

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