This annotated catalog of materials available from the Smithsonian Institution and its affiliate organizations, lists over 400 cross-indexed resources for classroom use. The contents are arranged as follows: An overview of the guide; catalogs and visitor guides; periodicals; resources for the arts, language arts, science, and social studies/history. Many items are free or available on loan. Appropriate grade level is indicated for materials to be used for instruction in the aforementioned subject areas. Included are a title index, a subject index, and a media index. The catalog concludes with a directory for where to order materials and order forms. (MM)