Library of Congress

Program for Cooperative Cataloging

The Library of Congress > Cataloging, Acquisitions > PCC > NACO - Name Authority Cooperative Program of the PCC > Documentation & Updates

NACO documentation, updates, and forms are posted to this Web site as they are approved by the LC Cooperative Programs Section.

The Policy and Standards Division has made available a comprehensive version of the Descriptive Cataloging Manual (DCM) Z1 and the LC Guidelines Supplement to the MARC 21 Format for Authority Data. These documents are current as of February 2014.

Note to NACO participants: DCM Z1 includes an appendix with instructions specific to Library of Congress staff that may be excluded when printing.

Electronic versions of both documents are also available through Cataloger's Desktop. Quarterly updates are available from the Cataloging Distribution Service.

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