A study was conducted to develop a retrieval system for slides in the History of Art Collection at Cornell University to make it more consistent and easier for patrons from other academic disciplines to use than the system currently in use. To determine whether slide library systems at other institutions could be adapted to the History of Art Department's needs, five systems were examined: (1) the International Museum of Photography at the George Eastman House; (2) the Smithsonian Institution's National Collection of Fine Arts (NCFA) Slide and Photographic Archives; (3) the Santa Cruz Classification System; (4) the slide library of Cornell University's College of Architecture, Art, and Planning; and (5) the slide classification scheme of Stanford University's Art Department. Based on such criteria as adaptability to machine-readable classification and the subject terminology used, the NCFA system was selected to test a sample of approximately 250 slides by assigning them to subject categories. It was found that NCFA is applicable, with some modifications, to the History of Art Department's slides of paintings, graphic arts, and sculpture. Recommendations for reorganizing the slide library include adapting general filing procedures and indexing the slides by subject. A 22-item bibliography and three appendices, one a prototypical thesaurus, are provided. (RBF)