89. Photography,, 1922-1981

General Overview: Documents CR's testing, research and projects relating to the reliability and quality of photography cameras and motion picture products. Includes correspondence, notes, magazine and newspaper clippings, photographic prints and negatives, product literature, test results, operating manuals, advertisements, and purchase orders. Topics include photography, mail order and commercial photo processing, film development, preservation and deterioration of negatives and prints, cameras in general, disposable cameras, electric eye cameras, miniature cameras, plate cameras, Polaroid or instant cameras, reflex cameras, roll film cameras, single frame, and used cameras. Also concerns photographic accessories such as filters, lenses, enlargers, exposure meters, flash bulbs, and film. Other topics include motion picture cameras, electric eye motion picture film, motion picture projectors, projection apparatus, slide projectors, lantern slides, stereoscopic cameras, microphotography for the office, early forms of photocopying and photocopy machines.