Grouping of Trolley Service, Electric Utility and Phone Openwire Lines, 1910 Boston.
By Joe Maurath, Jr.; posted April 24, 2020
View Original: Click to zoom, then click to magnify (847 x 523) 111KB
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Also there is a fire alarm telegraph circuit (on two-pin crossarms) along the top of the poles that run along the center of this image. |