[Message cross-posted to multiple lists. Please excuse the duplication.] In early 2007 the Cataloging Policy and Support Office (CPSO) of the Library of Congress initiated a project to create authority records for genre/form headings (MARC tag 155), which indicate what a work is, as opposed to what it is about. The first discipline undertaken was that of moving images (films, television programs, and video recordings), and was accomplished in cooperation with the Moving Image, Broadcasting, and Recorded Sound Division (MBRS). The first moving image genre/form authority records (MARC tag 155) were approved in September 2007. The second project undertaken, also in cooperation with MBRS, was to create radio program genre/form headings. The first of these authority records was approved in May 2008. We are now seeking volunteers for a pilot project to test PCC participation in contributing genre/form headings to LCSH in these two disciplines. Volunteers will propose new 155 headings in these two disciplines only. Volunteers must be SACO program members in good standing. Successful testing of contribution methods for genre/form headings for moving images and radio programs is the prelude to expanding creation of genre/form headings to other fields, such as law, literature, music, and religion. A timetable can then be formulated for this expansion. The pilot project does not include contributing genre/form subdivision authority records. Current practice allows members to propose through the SACO web form new genre/form headings tagged as 150s for use in their local files as 155 headings. This practice will continue for those not in the test project. Please contact Paul Frank, Cooperative Cataloging Team, Library of Congress, [log in to unmask], with expressions of interest by Wednesday, August 6, 2008. Please include the following information: 1. Do you have a special collection of moving images or radio programs? 2. Do you have an existing database of headings in the MARC 21 format that you would like to contribute, or will you be working from scratch? 3. If you have an existing database, how many genre/form records do you wish to contribute? 4. How large a weekly contribution do you anticipate?