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Medium
- negatives (photographs)6,647
- black-and-white negatives1,751
- black-and-white photographs873
- photographs490
- lesson plans290
- photomechanical prints227
- identification photographs157
- slides (photographs)141
- videocassettes38
- color transparencies34
- U-matic (TM)33
- photographic transparencies32
- aerial views16
- videotapes15
- group portraits11
- newsreels8
- 16mm (photographic film size)7
- color film (film, material)6
- moving images6
- color photographs4