Public domain
Parke, Davis and Company, manufacturing chemists, Detroit, Michigan. Placing glass ampoules in metal racks preparatory to passing them through an automatic sealing machine
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineParke, Davis and Company, manufacturing chemists, Detroit, Michigan. Placing glass ampoules in metal racks preparatory to passing them through an automatic sealing machine. 1943-01-01. Siegel, Arthur S.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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