The videotape courses available through the Agency for Instructional Television (AIT) are listed. Courses fall into three broad categories: primary through senior high, post-secondary, and teacher inservice. Within each category, individual courses, their materials, and their intended audiences are described. Courses are indexed by relevant grade level and subject area. The policies, procedures, and prices for use of videotape courses are also provided. As an aid to the potential user of instructional television materials, professionally-oriented publications and films distributed by AIT are listed. The document also contains historical notes on the development of AIT and its predecessor organization, National Instructional Television, together with a list of the current AIT professional staff and board of directors. (DC)