General view of a glassblower, identified as L. Testa, working in an unidentified U.S. Department of Agriculture facility. Per a 1931 list of technical workers in the Department of Agriculture, Testa worked as a glassblower in the Biological and Organic Division, Fertilizer and Fixed Nitrogen Investigations, Bureau of Chemistry and Soils.
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“Glassblower at U.S. Department of Agriculture,” 1931. Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 3. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/sf268541c.
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