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7 résultats pour : bureau of standards worker

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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...

A National Bureau of Standards worker conducting experiement to help with movie film preservation circa 1938.
UMG21A21_394

A National Bureau of Standards worker conducting e...

A National Bureau of Standards worker conducting experiement to help with movie film preservation - folding endurance test circa 1938.
UMG21A21_395

A National Bureau of Standards worker conducting e...

A National Bureau of Standards worker conducting experiement to help with movie film preservation - resistance testing circa 1938.
UMG21A21_396

A National Bureau of Standards worker conducting e...

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

Government waste - Government employee testing pan...