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Featuring Union Switch & Signal equipment photos
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J. W. Hansen
48 views
B. F. Rogers
48 views
Mr. C. B. Ramsdell
48 views
P. J. DeIvernois
48 views
Interurban Electric Railway
48 views
Interurban Electric Railway
48 views
UR machine, North Portal
48 views
Relay Cabinets at Market St.
48 views
Ridge Ave. Subway
Compressors at Market St.
48 views
Ridge Ave. Subway
Rectifiers at Market St.
48 views
Ridge Ave. Subway
View north from Spring Garden St. Station
48 views
Ridge Ave. Subway
Westchester Yard - N.Y.B.T.
48 views
Westchester Yard - N.Y.B.T.
48 views
Burhe - Pelham Bay - Dispatchers Track Indicator - N.Y.B.T.
48 views
Morris Park Interlocking - N.Y.T.A.
48 views
149th St. Interlocking Track Model (T. Line N.Y.T.A.)
48 views
Titan Missile Launching Equipment Cabinet
48 views
Annunciator Open
Handset for Control of Locomotives
48 views
Carryphone
48 views
PRR (Kinzua Dam) - 17-1/2" RS Case (front)
48 views
Cast Iron Foundation with Instrument Case
48 views
Interior of 5'x7' Steel Relay House - St. Louis to Fordyce C.T.C.
48 views
Seaboard 5'x7' Relay House
48 views
C.M.St.P. & P. R.R. - Airline Yard Relay House
48 views
A.T. & S.F. R.R. - Argentine Yard - Kansas
48 views
Coupling Unit with case removed to show interior
48 views
Neoprene case Hand Microphone
48 views
Style "SCU" Transmitter
48 views
Style "SCU" Receiver
48 views
P.R.R. - I.T.C. equipped Diesel Electric Locomotive
48 views
Style "ST" Dynamotor Unit
48 views
Eastbound signals and layout west Portal Tunnel, 3 miles east of tower "A" - Allegheny Summit CTC - C. & O.
48 views
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