One forgets about all those photos from the Library of Congress that are in the public domain... Valley of the Shadow of Death, 1855
Prohibition
Walker Evans
Gordon Parks
Dorothea Lange
Montana 1942
Unknown farmer
Switchman, Chicago 1943
Crane Operator, TVA's Douglas Dam 1942
40th street railroad shop Chicago 1942
Illinois central RR
Worker at carbon black plant Sunray Texas 1942
and some other great Office of War Information Collection photos from the 40s
16-inch coast artillery gun Ft.Story VA 1942
"An American Pineapple" :-)
P-51 Mustang
Fighter pilot
test pilot, Long Beach 1942
...and the daguerreotypes