The films and filmstrips listed in this catalog are Federal records, since they document the functions and operations of Federal agencies. This is the first edition of the sales catalog for the National Audiovisual Center. It contains films categorized under 18 broad headings: agriculture, automotive, aviation, business, education and culture, electricity, electronics, health and medical, human relations, machining, marine, national security, physical fitness, safety, science, social science, technical, and woodworking. Each of these broad subject areas is further broken down into more narrow categories. The following information is provided for each film: title, length, type (sound or silent, color or black and white), order number, price and a brief annotation. There is a title index to the entries. (The 1971 supplement to this first edition is LI 003876.) (SJ)