Hall Signal Company (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hall Signal Company" in English language version.

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2news.google.com

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1books.google.com

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books.google.com

Bianculli, Anthony J. (2003). "Volume 4. Bridges and Tunnels; Signals". Trains and Technology: The American Railroad in the Nineteenth Century. Cranbury, NJ: Associated University Presses. pp. 146–147. ISBN 0-87413-803-5.

news.google.com

"To Terminate Corporate Existence; Directors of Hall Railway Signal Co. Have So Voted". Meriden Weekly Republican. 1907-06-13. p. 7.
"Hall Signal Company's Factory". Meriden Weekly Republican. 1892-04-14. p. 5.

nytimes.com

select.nytimes.com

"Hall Signal Co.'s Plans". New York Times. 1912-03-19.