BUY PRINT    Chicago, December 1942. "Hump master in a Chicago & North Western railroad yard operating a signal switch system which extends the length of the hump track. He is thus able to control movements of locomotives pushing the train over the hump from his post at the hump office." 4x5 Kodachrome transparency by Jack Delano for the Office of War Information. | Click image for Comments. | Home | Browse All Photos