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Conversion. Floor waxer plant. Erstwhile elevator operator, this emplo...
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Conversion. Silverware plant. Erstwhile polisher of fine silverware, t...
Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description
Conversion. Pianos to airplane motors. Erstwhile piano keyboard assemb...
Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.