This photograph, numbered 111-SC-43035, was taken by a photographer from the Central Department, Signal Corps. It depicts a fire alarm automatic mechanism in the switchboard room at Rock Island Arsenal in Illinois. The photograph was issued on January 31, 1919, and was part of the telephone installations at the arsenal. 43

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Size: 8565px × 5721px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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