JC Burkholder (chief engineer of the
JC Burkholder (chief engineer of the Canadian National Telegraphs) mounted the first two-way telephone in the world for trains. About 1935. Photograph
Picture No
10964514
Media ID
46090228
Size
3543px x 2828px
(2.1MB)
Credit
Mary Evans/brandstaetter images
Source
Photograph - Anonymous
Date
1935
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