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Start Over You searched for: Date 1920 Remove constraint Date: <span class="single" data-blrl-single="1920">1920</span>-
Laboratory assistant at mixed acid work bench
- 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…
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Laboratory bench attributed to U.S. Bureau of Standards
- 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…
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Manual breast pump with black bulb
- After 1920 – before 1959
Glass tube with a collecting reservoir that opens into a funnel (or breast piece). Round black rubber pump attached to one end of the glass.
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Unidentified man in laboratory
- 1920s
General view of an unidentified man, presumably a laboratory assistant, seated at a work bench with assorted scientific equipment and glassware. While the setting of this photograph is also unidentified, the photo was…
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Unidentified man in laboratory
- 1920s
General view of an unidentified man, presumably a laboratory assistant, posed near a work bench with assorted scientific apparatus and glassware visible in the background. While the setting of this photograph is also…
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Unidentified woman in laboratory
- 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. While the setting of this photograph is also…
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Unidentified woman in laboratory
- 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. While the setting of this photograph is also…
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Unidentified woman in laboratory
- 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. While the setting of this photograph is also…
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Unidentified woman in laboratory
- 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…
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55 items
Welsbach Gas Light Company photograph album
- 1920s
Album containing 52 black and white photographs documenting various aspects of the production process at the Welsbach Gas Light Company site located along the Delaware River in Gloucester City, New Jersey. From 1888 to…