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Titles
- [Haloid Xerox copy flo machine]3
- Main reading room of the National Library of Medicine1
- Miss Frances Joseph operates the preservation camera1
- Mrs. Pearl Caldwell operates the MacBeth densitometer1
- [Microfilming material]1
- [Pearl Caldwell working with microfilm reels]1
- [Placing a book under microfilm camera's glass]1
- [Separating antibodies from other proteins]1
- [Side view of the Haloid Xerox copy flo machine]1