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History
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US&S head office located in Swissvale, Pennsylvania, as seen in 1929
US&S head office located in Swissvale, Pennsylvania, as seen in 1929
US&S signal bridge, pictured in 1913
US&S signal bridge, pictured in 1913
US&S position light signal, 1922
US&S position light signal, 1922
Mechanism of a searchlight signal made by Union Switch & Signal in 1944 for the Rock Island Railroad
Mechanism of a searchlight signal made by Union Switch & Signal in 1944 for the Rock Island Railroad
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Westinghouse Electric Company 1888 catalog advertising their "Alternating System"
Westinghouse Electric Company 1888 catalog advertising their "Alternating System"
Aerial view of Niagara Falls, with the American Falls at left and the Canadian Horseshoe Falls on the right
Aerial view of Niagara Falls, with the American Falls at left and the Canadian Horseshoe Falls on the right
The residence of George Westinghouse in Washington, D.C., from 1901 to 1914
The residence of George Westinghouse in Washington, D.C., from 1901 to 1914
George Westinghouse, c. 1906
George Westinghouse, c. 1906