New York, New Haven & Hartford Railroad, Automatic Signalization System, Long Island Sound shoreline between Stamford & New Haven, Stamford, Fairfield County, CT

Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-voltage railroading in the United States.

Survey number: HAER CT-8

Building/structure dates: 1917 Initial Construction

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1933 - 1970

Library of Congress

http://www.loc.gov/

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