Concentrating on slides, as the major classroom teaching material for the study of art history, this paper provides an outline of procedures for their acquisition, processing, storage, circulation and management. Following on from this the development of the profession of slide curator (qualifications, training and status), and the organisations which have been formed to serve the needs of this professional group and their achievements are described, and evaluated. This paper was first delivered to the Section of Art Libraries at the IFLA Council in Montreal, August 1982.