The photographs in the Farm Security Administration / Office of War Information Photograph
Picryl description: Public domain historical photograph of 1930s America during the Great Depression, free to use, no copyright restrictions image.
Lee, Russell, 1903-1986, photographer
Library of Congress
No known restrictions. For information, see U.S. Farm Security Administration/Office of War Information Black & White Photographs http://www.loc.gov/rr/print/res/071_fsab.html