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Department Archives Remove constraint Department: Archives Genre Photographs Remove constraint Genre: Photographs Genre Ephemera Remove constraint Genre: Ephemera Rights No Known Copyright Remove constraint Rights: No Known Copyright

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    • 1920s

    Close-up view of an electrolytic apparatus at a laboratory work bench attributed to the U.S. Bureau of Standards. Notably, the photograph is printed as a postcard, with space reserved on the verso for a message, mailing…

    • 1920s

    General view of an unidentified laboratory facility looking toward the chief's office from the perspective of the supply store, with a side view of various offices and work benches. Notably, the photograph is printed as…

    • 1920s

    General view of an unidentified laboratory facility looking toward the supply store from the perspective of the chief's office, with inscriptions indicating the location of offices and work benches associated with…

    • 1920s

    General view of a laboratory assistant, identified as "Mac May," posed at a work bench for mixed acid materials. Notably, the photograph is printed as a postcard, with space reserved on the verso for a message, mailing…

    • 1920s

    General view of a laboratory assistant, identified as "Mac May," posed at a work bench for mixed acid materials. Notably, the photograph is printed as a postcard, with space reserved on the verso for a message, mailing…

    • 1920s

    General view of a laboratory bench with assorted glassware and scientific apparatus. Notably, the photograph is printed as a postcard, with space reserved on the verso for a message, mailing address, and postage. While…

    • 1920s

    General view of an unidentified woman, presumably a laboratory assistant, posed near a work bench with assorted scientific apparatus and glassware visible in the background. Notably, the photograph is printed as a…