|LAC, LC, NLM, and Program for Cooperative Cataloging use only. Used for specific projects. If you are not part of the project, you should not enter these codes.|
|1st Indicator Undefined|
|2nd Indicator Undefined|
|Subfields (R=Repeatable NR=Nonrepeatable)||Input Standards (Full/Minimal)|
|ǂa||Authentication code (R)||Mandatory/Mandatory|
One or more authentication codes indicating that the record, existing in a national database, has been reviewed in a specific way. Used for codes associated with specifically designated authentication agencies. Code from MARC Authentication Action Code List. Field 042 is an agency-assigned data element.
Australian National Union Catalog. Code anuc signifies that the descriptive elements have been edited and all headings verified against the relevant authority file to prepare the record for inclusion in the Australian National Bibliographic Database. The Australian National Bibliographic Database authenticates records for Australian imprints, and bibliographic and authority records of Australian interest.
Dublin Core. Record is converted from a simple resource description record in another syntax (e.g., HTML or SGML) using the Dublin Core metadata element set. The content of the record (descriptive elements and headings) may or may not follow any cataloging standard (e.g., AACR2 or RDA). The OCLC system supplies code dc whenever a user creates a record using Dublin Core new.
Dance Heritage Coalition Access Project. Record is authenticated under the auspices of the project.
Digital Library Registry. Record is created according to the best practice guidelines developed by the Digital Library Federation for a registry of digitally reformatted and born digital monographs and serials.
Georgia Archives & Manuscripts Automated Access Project. Record is authenticated under the auspices of the project.
Government Information Location Service. Record is derived from a locator record contained in a GILS server using the GILS Application Profile. The content of the record (descriptive elements and headings) may or may not follow any cataloging standard (e.g., AACR2 or RDA).
ISSN Canada. CONSER ISSN Network data elements are verified by ISSN Canada. ISSN Canada authenticates ISSN data elements for Canadian imprints. The code reflects the ISSN Network's earlier name, ISDS (International Serials Data System).
ISSN UK Centre. Code issnuk signifies that the ISSN Network data elements have been verified by ISSN UK. ISSN UK authenticates ISSN data elements for United Kingdom imprints.
Library and Archives Canada monographs. Code lac signifies that the descriptive elements and headings on a bibliographic record have been verified by Library and Archives Canada. LAC authenticates full monograph records for Canadian imprints and records of Canadian interest.
LC Annotated Children's Cataloging Program. Record is handled as part of the program whereby summaries and children's subject headings are added to facilitate the use of the item by a juvenile audience.
LC Copy Cataloging. Record is based on another cataloging agency's record. Headings are verified with the relevant authority file, except those subject headings not from Library of Congress Subject Headings.
LC Copy Cataloging-Near Match. Record is based on an existing record that is not an exact match of the item in hand. The record used can be from LC or another cataloging agency and can be for another edition, version, or format of the item. The records are updated to a full encoding level to reflect the item in hand. Headings are verified with the relevant authority file, except those subject headings not from Library of Congress Subject Headings.
LC Derived Cataloging. Record from another cataloging agency, essentially used "as is." Headings and uniform titles are processed through special software to verify that they match all existing LC authority records and conform to all cataloging rules.
LC Handbook of Latin American Studies. Descriptive and subject elements are derived from the internal LC Handbook of Latin American Studies file. Name headings may or may not be verified through LC's name authority file.
LC Law Library Hispanic. Descriptive elements are derived from the LC Index to Hispanic Legislation. Name headings are verified though LC's name authority file.
LC National Coordinated Cataloging Program. Obsolete. Do not use. Project replaced by Program for Cooperative Cataloging (PCC).
LC nitrate film. Descriptive elements are derived from an LC database with inventory information from LC's nitrate film collection. Name headings are not verified through LC's name authority file.
National Union Catalog. Descriptive elements are edited and headings are verified through the relevant authority file to prepare the record for input into LC's National Union Catalog file.
LC Overseas Data Entry. Record is from an LC overseas field office. Descriptive elements follow AACR2 or RDA. Headings are processed through special software to verify that they match LC's name authority file.
CONSER Minimal Authority Application. Descriptive elements have been verified by LC or an authenticating CONSER participant. Headings have been checked against the relevant authority file, but an authority record was not found for one or more headings.
Library and Archives Canada. CONSER descriptive elements and headings have been verified by Library and Archives Canada, which authenticates records for Canadian imprints and records of Canadian interest.
National Library of Medicine copy cataloging. Record is based on another cataloging agency's record. Headings are verified with the relevant authority file, except those subject headings not from the National Library of Medicine.
National Serials Data Program. ISSN Network data elements are verified by the United States National Serials Data Program (NSDP). NSDP authenticates records for U.S. imprints. NSDP also authenticates ISSN assignments and key titles for records received from other ISSN Network centers, with the exception of Canadian imprints authenticated by ISSN Canada.
New Serial Titles. Obsolete. Do not use.
LC National Translations Center Citation File. Descriptive elements are derived from the LC National Translations Center Citation File. Name headings are not verified through LC's name authority file.
Program for Cooperative Cataloging. Record is authenticated under the auspices of the program. All name and series headings have been verified through the appropriate national level authority file. Authority records have been created if they do not already exist. Subject headings are checked for authorized forms and combinations supported by the relevant authority.
LC PreMARC Retrospective Conversion Project. Record was converted to machine-readable form as part of an LC retrospective conversion project. Source records used in the initial phase of this project (1978–79) were printed catalog cards taken from the LC general, atlas and map, and music shelflists. Printed catalog cards from various other manual LC files were subsequently used as the source for additional records converted.
REVEAL Union Catalog Project. Code reveal signifies that the MARC record conforms to the criteria for inclusion in the REVEAL union catalog.
South African National Project. Descriptive elements and headings are verified as conforming to the standards of the bibliography.
Scipio Art and Rare Book Sales Catalogs. Code scipio signifies that the descriptive elements conform to rules for inclusion in Scipio. For more information, see the Scipio Cataloging Formats and Standards.
British Library derived cataloging. Code ukblcatcopy signifies that the British Library has used another organization's catalog record essentially "as is" for its cataloging. All name headings have been checked against the relevant authority file.
British Library Standard Record. Code ukblsr signifies that the record conforms to the definition for the British Library Standard Record and all name and subject headings have been verified against the relevant authority file.
UK Legal Deposit Libraries' Shared Cataloging Programme Record. Code ukscp indicates that the record conforms to the definition for the UK Legal Deposit Libraries' Shared Cataloguing Programme Record.
Codes beginning with the letter x signify the agency does not consider the item to be a serial. Subsequent developments may cause the title to be recataloged as a serial.
Authentication is the process by which LC, Library and Archives Canada and CONSER participants enter their new and updated serial records into WorldCat. Those records are then selected for distribution by the MARC Serials Distribution Service. Authenticated records meet the national and international standards and practices agreed upon by CONSER participants and are documented in the CONSER Manual and the MARC Serials Editing Guide.
Undefined. The 1st indicator position is undefined and contains a blank.
Undefined. The 2nd indicator position is undefined and contains a blank.
|ǂa Authentication code||
The authentication code.
For indexing and searching information, see Searching WorldCat Indexes, field 042.
This page last revised: May 6, 2020