Scope: Minimal-level cataloging (MLC) is an abbreviated form of cataloging that gives limited bibliographic description, subject analysis and (in most cases) authority work. Materials eligible for MLC include low-need and/or low research value titles.
Contact: Pam Stansbury / Laura Wright
Unit: Cataloging
Date last updated: 10/9/2019
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MARC 21 Definition | Tag | LTS Minimal Level Requirement |
Library of Congress Control No. | 010 | Mandatory if applicable. Enter any DLC label mounted on the cover. |
ISBN | 020 | Enter |a if it appears on the item (|z if you know it can’t possibly be valid, for example if it’s not 10 or 13 digits long) |
System Control Number | 035 | Retain the OCLC control number if present. Do not include an OCLC control number for a different manifestation. Do not include an OCLC control number for a non-English record (that is, 040 |b must be blank or “eng”). |
Cataloging Source | 040 | Subfields OCLC automatically supplies |a , and |d ; |b , |c mandatory; eng and |e rda and |d (if applicable) are mandatory |
LC Call No. | 050 | |
Authorized access point | 1xx | Mandatory if applicable (includes 100, 110, 111, 130) |
Preferred title | 240 | Enter a preferred title if known or readily inferred from the item; otherwise, omit. See Guidelines for Access Points, section 2, below |
Title area | 245 | Subfield |a is mandatory; |b and |c if applicable |
Varying form of title | 246 | Optional ; use judgment. Record parallel titles. |
Edition area | 250 | Mandatory if applicable |
Imprint | 264: 1: (RDA); 260 (usually AACR2) | Mandatory if applicable; |a, |b and |c should be present |
Physical description | 300 | Subfields |a and |c are mandatory; all other subfields are optional |
Content, Media, Carrier | 336, 337, 338 | Mandatory on RDA records, recommended for all records. Use macro #r1 for print monographsOCLC macro "Add33x" or Essentials macro "Check 33X" |
Series | 490:0 : | Transcribe series if present. Do not trace the series in an 830. Remove an 830 if one happens to be present on the in-process record. |
FAST subject access | 6xx | Mandatory if applicable; see Guidelines for Subject Access (FAST) |
Added entries | 7xx | All added entries are optional; see Guidelines for Added Entries |
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- If you find an authority record, use that form, which is the authorized access point, and control the heading.
- If you don't find an authority record, search Voyager and use a form from a Voyager bibliographic record. If several forms of the name or uniform title occur in Voyager, select a heading form in this order of preference: a full RDA or AACR2 record; another MLC record; an LC in-process (Encoding level 5) record. Use judgment to select one of them; make a quick decision in most cases.
- If the heading is new to Voyager, formulate the heading using RDA, information from the item, and information you've discovered by searching Voyager.
- If the heading conflicts with a heading that already occurs in Voyager, resolve the conflict by making additions to the MLC heading.
- If the conflict cannot be resolved in this manner, create an RDA NACO authority record.
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