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In the left foreground are four operators at telephones, one connected...
Public domain photograph of musical performance, musicians, music, free to use, no copyright restrictions image - Picryl description
Office of Civilian Defense worker help protect nation's capital. Nerve...
Picryl description: Public domain image of a political campaign, group of people, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.
Office of Civilian Defense worker help protect nation's capital. Nerve...
Picryl description: Public domain image of girl workers, child labor, working children, economic conditions, free to use, no copyright restrictions.