This index to overhead transparencies contains 18,000 entries, arranged alphabetically both by individual title and by series title in the main section of the book. Individual title entries include number of overlays, stock or color code, brief description, series title reference when applicable, year of release, and codes indicating producer and distributor. In addition, the size of the transparency, physical description, and audience or grade levels are provided. A subject guide, which lists entries under 25 broad subject categories and several hundred subheads, a subject heading outline, an index to subject headings, and a directory of producers and distributors are also included. (Author/SP)