Archives Center, National Museum of American History
Archives Center, National Museum of American History
Archives Center, National Museum of American History
Smithsonian Institution Archives
Archives Center, National Museum of American History
Archives Center, National Museum of American History
Archives Center, National Museum of American History
Archives Center, National Museum of American History
Archives Center, National Museum of American History
Archives Center, National Museum of American History
[Giant hoist and rail line beside Panama Canal.] 12318 interpositive.