ABC's of visual aids and projectionist's manual.

Mode of access: Internet.

ABC's of visual aids and projectionist's manual.

Mode of access: Internet.

Chicago public schools, catalogue of 16mm. sound and silent motion picture films and stereopticon slides ... 1942-1943

Mode of access: Internet.

Motion pictures & sound and video recordings in the National Archives.

Mode of access: Internet.

Photomicrography; an introduction to photography with the microscope, with a section on motion photomicrography.

Two celluloid filters for visual use only mounted on p. 21.