AMERICAN SIGNAL BOX
The interior of a signal box using Saxby and Farmer's system of switches and signals. The standing man shifts the levers, his colleague uses the telegraph
Picture No
10150558
Media ID
47348112
Size
4239px x 3763px
(4.3MB)
Credit
Mary Evans Picture Library
Source
Untitled in the Scientific American, 3 April 1875
Date
1875
