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Featuring Union Switch & Signal equipment photos
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Main Street Interlocking - Back
40 views
Back View of Queensboro Plaza - N.Y.T.A.
40 views
Back Panel of Mott Avenue Interlocking - N.Y.C.T.A.
40 views
Individual Compressor for Stop Valve - N.Y.T.A.
40 views
Individual Compressor for Stop Valve - N.Y.T.A.
40 views
111th Street U.R. Machine - N.Y.T.A.
40 views
R.A.D.C. Air Traffic Control AN/GSN-7
40 views
Console
3G Shock Testing Machine
40 views
Titan # Missile Facilities
Remote Control of Locomotive (Receiver) - Ford Motor Car Co.
40 views
Russian Relay Case
40 views
First Installation of Individual Carrier Units. - West End of Aspinwall Interlocking - Etna, PA - PRR
40 views
Cast Iron Base for Relay Cases
40 views
3'-3" Instrument Case for N.Y.C.& St.L.
40 views
C.&O. Ry. - 9'-8" Instrument Case
40 views
Chicago-Illinois & Midland RR (Andrews Highway Crossing Relay Case) close up
40 views
Low B-10 Instrument Case (back)
40 views
Cast Iron Foundation with Instrument Case
40 views
Boston & Maine Relay House
40 views
C.M.St.P. & P. R.R. - Airline Yard Relay House
40 views
C.M.St.P. & P. R.R. - Bensonville Relay House
40 views
Relay House
40 views
Relay House
40 views
Photo of New Relay House
40 views
Photo of New Relay House
40 views
Inside Relay house - T.R.R.A. of St.L.
40 views
M-22-A Dual Control Switch Movement
40 views
M-22-A Dual Control Switch Movement
40 views
T-21
40 views
T-21
40 views
Magnolia Pipe Line Company Control System
40 views
Dept. 50 Pipeline (Production and Assembly)
40 views
South African Railways
40 views
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