File:Ektachrome- and Bell & Howell-brand film reel canisters.jpg - Wikimedia Commons

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British Cinematographer - Issue 85 by Open Box Media

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File:BELL AND HOWELL FILMO 70-DR (4432378206).jpg

Film reel camera hi-res stock photography and images - Alamy

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35 mm movie film - Wikipedia

Category:9.5 mm film - Wikimedia Commons

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Bell howell hi-res stock photography and images - Alamy

Field Guide to Sponsored Films - National Film Preservation