This directory of 16mm film libraries has been compiled for the use of teachers, school administrators, librarians, community leaders, and others who use or wish to use motion pictures in their educational and informational programs. It is a revision and an expansion of the Office of Education publication, "A Directory of 2,002 16mm Film Libraries," which was prepared and issued two years ago. It is hoped that this annotated directory of film libraries, arranged by States and cities, will be helpful to all groups interested in obtaining and using 16mm films and, furthermore, that the information provided in this directory concerning the resources and services of more than 2,600 film libraries will be useful in the national defense programs. The directory includes libraries which handle entertainment films and those which handle instructional films; it includes libraries which have only one film and libraries which have thousands of films. It includes commercial dealers, colleges and universities, city and State school systems, public libraries, industrial companies and trade associations, labor unions, civic groups, religious institutions, and Government agencies. [Best copy available has been provided.]