The 1975 catalog lists recorded visual materials available through the Great Plains National (GPN) Instructional Television Library in Lincoln, Nebraska. Series and materials descriptions are provided together with the following indexes: (1) elementary, by subject matter; (2) 4-H series; (3) elementary, by grade level; (4) junior high, secondary, and adult; (5) utilization and inservice; (6) college; and (7) special products. General information on usage policies, prices, previewing, and the GPN staff is also included. (DGC)