This guide is a complete directory of nearly 5,000 films available free of cost (except, in most cases for return postage) in the United States. The major portion of the guide lists films alphabetically within each of these categories: accident prevention and safety, aerospace education, agriculture, arts and handwork, business education, clubs and scouting, communications and transportation, conservation, consumer education, driver education, entertainment, geography, guidance, health and social hygiene, history, home economics, industrial arts, music, religion, schools and educational opportunities, science, social problems, and sports. Each listing includes a two- or three-sentence synopsis of the film, its release date, running time, and print size, as well as the source where it may be obtained. Other indexes list the films by title and subject. A source and availability index gives addresses of sources and guidelines for ordering. Sources having films available in Canada are separately listed. (JK)