A group of men standing next to each other. Public domain portrait photograph, 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 New York in 1930s, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of child labor, exploitation, children workers, economic conditions, free to use, no copyright restrictions.
Public domain photograph of a woman, female portrait, free to use, no copyright restrictions image - Picryl description
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.