"About Libraries" is an annotated list of nonbook materials available from the Reference and Loan Library of the Wisconsin State Department of Public Instruction. Some of the materials are aids in teaching about libraries: library skills, library concepts, library functions. Other materials contribute to the general store of information of interest to the librarian as tools for use in professional development and continuing education. The listing is arranged by media format; cassettes and audio tapes, phonograph records, transparencies, slides, filmstrips, videotapes, and 16mm films, from both current and archival collections. (Author/SL)