URLs in Name Authority Records
The December 2005 update to DCM Z1, available on the PCC Web site at:
provides guidelines on the use of subfield $u in the 670 field. URIs in 670 fields are now only appropriate for use in subfield $u; they should not be used in subfields $a or $b. The information in support of this is at the above address under the subsection of 670 headed Internet resources on p. 5 of the PDF
CPSO continues to see new name authority records with URIs put in subfields $a or $b. Please keep in mind this recent change in practice when creating new authority records.
Anthony R.D. Franks
Team Leader, Cooperative Cataloging Team
Library of Congress