Contact: Guy Lamolinara (202) 707-9217

March 1, 1996

Library of Congress Publishes Updates to the USMARC Formats for Classification and Authority Data

Update No. 1 (July 1995) to the USMARC Format for Classification Data and Update No. 1 (July 1995) to the USMARC Format for Authority Data are now available from the Cataloging Distribution Service of the Library of Congress. Update No. 1 to the USMARC Format for Classification Data is the first since 1990; Update No. 1 to the USMARC Format for Authority Data is the first since 1993.

Update No. 1 to the USMARC Format for Classification Data includes all the new and changed USMARC data elements resulting from format development work during the conversion of Library of Congress Classification (LCC) schedules to machine-readable form.

Among other significant changes, the Update includes new inputting conventions for LCC numbers and new definitions of a separate field for table identification and of field 856 for electronic location and access when a resource related to the schedule exists. The Update deletes the separate subfield for the class schedule to which a table belongs and includes definitions of several data elements simultaneously defined in USMARC Format for Bibliographic Data.

Update No. 1 to the USMARC Format for Authority Data adds several field-level data elements for genre/form terms and subdivisions. The new fields make it possible to differentiate between genre/form terms and other types of terms within a USMARC authority record. Other new data elements include fields for government classification/call numbers and indicators in two classification number fields that allow identification of the source of a number. The bulk of the Update deals with the addition of subfield =|v (Form subdivision) in the heading (1XX), tracing (4XX/5XX) and linking entry (7XX) fields. On the first page of each revised field descriptions is included a list of valid content designators to minimize the need to refer to a corresponding "General Information" section. Finally, a revised Appendix A (National Level Record Requirements) is shorter and more simply presented.

Update No. 1 to the USMARC Format for Classification Data (July 1995) sells for $20 (North America) and $21 (outside North America). Update No. 1 to the USMARC Format for Authority Data (July 1995) sells for $21 (North America) and $22 (outside North America). Order from: Library of Congress, Customer Services Section, Cataloging Distribution Service, P.O. Box 75720, Washington, DC 20013-5720; telephone (800) 255-3666 (U.S. only) or (202) 707-6100; Fax: (202) 707-1334. TDD: (202) 707-0012.

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PR 96-29
3/1/96
ISSN 0731-3527

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