Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a coal mine, mining, free to use, no copyright restrictions.
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description
Picryl description: Public domain image of a damaged, burned, or destroyed building, natural disaster, war destruction, ruins, 19th-century architecture, free to use, no copyright restrictions.
Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description
Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.
Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.
Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.
Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a coal mine, mining, free to use, no copyright restrictions.