I don't see any examples of subfield u in 670s in this link. What link should I be using? http://www.loc.gov/marc/authority/ Martha C. Powell Director of Cataloging Services James P. Boyce Centennial Library Southern Baptist Theological Seminary 2825 Lexington Rd. Louisville, KY 40280-0294 (502) 897-4096 FAX: (502) 897-4600 [log in to unmask] -----Original Message----- From: Program for Cooperative Cataloging [mailto:[log in to unmask]]On Behalf Of Antony Robert David Franks Sent: Thursday, March 15, 2007 7:51 AM To: [log in to unmask] Subject: Re: [PCCLIST] Subfield U in 6760s Naco members, In this discussion, one should keep several points in mind: The *NACO participant*s manual* is not authoritative and the current edition (November 2005) pre-dates many developments. It is merely a guide to documentation and practice. More important, one should not catalog by example, but by rule. Both DCM Z1 and the *MARC21 Format for Authority Data* have been updated and give both formatting instructions and examples for the proper use of subfield u in 670s. Anthony R.D. Franks Team Leader, Cooperative Cataloging Team Library of Congress 202-707-2822 (voice) 202-252-2082 (fax)