Mike, In practice, the provisions in Z1 relating to the revision of name headings contributed to the NACO file by the British Library have become more a notification than an approval process. A simple e-mail to the address provided in Z1, specifying the record number and the revisions involved, will usually suffice. They are very agreeable to other bibliographic inquiries sent through the same address. This change in practice has been to a large extent due to the British Library's willingness to adopt the NACO form of heading in its database and bibliographic products in preference to its own. In order for them to do this, however, they must be informed of the revisions. In some past cases, I have received responses from them asking for a delay in distributing a revision, due to the need of synchronising their own bibliographic distribution system with that of LC/PCC. In my eight happy years dealing with the BL, they have never "disapproved" a revision to a heading. At most, they have provided better data which can be used in either a new, AACR2 formulation of the heading or qualifiers to the heading. The reminder to the PCC list was done at their request during a particularly complicated phase of data migration to their new system. It is particularly useful to that process for them to keep the bulk of the database as current as possible; notification is the quickest way to do that. Anthony R.D. Franks Cooperative Cataloging Program Specialist Library of Congress 202-707-2822 (voice) 202-252-2082 (fax)