Public domain photograph related to electrical equipment, industrial development, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of workers, labor, 1940s, economic conditions, free to use, no copyright restrictions.
Picryl description: Public domain image of girl workers, child labor, working children, economic conditions, free to use, no copyright restrictions.
Public domain photograph of electric industrial equipment, free to use, no copyright restrictions image - Picryl description
Public domain photograph - historical image of Connecticut, United States, free to use, no copyright restrictions image - Picryl description
Public domain photograph of electric locomotive, electrified railroads, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.