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4 résultats pour : worker at bureau of standards

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Workers at the Bureau of Standards, Instrument shop ca. between 1909 and 1920
UMG22A11_444

Workers at the Bureau of Standards, Instrument sho...

Worker at the Bureau of Standards making extensive tests of hollow glass building blocks circa 1938 .
UMG21A21_390

Worker at the Bureau of Standards making extensive...

Workers at the National Bureau of Standards testing the strength of glass panels circa 1938 .
UMG21A21_391

Workers at the National Bureau of Standards testin...

Government waste - Government employee testing panty hose circa 1938.
UMG21A21_359

Government waste - Government employee testing pan...