African American workers operate one of Herman
African American workers operate one of Herman Haupts inventions, the Corkscrew Twist which used levers and steel hooks to destroy Confederate railroad tracks during the US Civil War, July 1863
Picture No
13124111
Media ID
45372095
Size
3000px x 2229px
(1.2MB)
Credit
Mary Evans / The Everett Collection
Source
Courtesy Everett Collection
