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Genre Ephemera Remove constraint Genre: Ephemera Rights No Known Copyright Remove constraint Rights: No Known Copyright Subject Employees Remove constraint Subject: Employees

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    • 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 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…