Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description
Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.