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First Installation of Individual Carrier Units. - West End of Aspinwall Interlocking - Etna, PA - PRR
40 views
3'-3" Instrument Case for N.Y.C.& St.L.
40 views
C.&O. Ry. - 9'-8" Instrument Case
40 views
Cast Iron Foundation with Instrument Case
40 views
Boston & Maine Relay House
40 views
Relay House
40 views
Inside Relay house - T.R.R.A. of St.L.
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
Control desk, Pretoria
40 views
Caliente-Lynndyl
39 views
Lynndyl-Salt Lake
39 views
Gibbon-Menoken
39 views
Westchester Yard
39 views
Westchester Yard
39 views
Hump Conductor's Office
39 views
Control Tower View Intermediate Retarder (Eastward)
39 views
Conway Yard Retarder Control Machine
39 views
Conway Yard Retarder Control Machine
39 views
West Conway Yd. Hump Control Machine
39 views
Rear view with Terminal Board down
39 views
Gateway Yard - Youngstown, Ohio
39 views
Gateway Yard
39 views
Model 31 Car Retarder Installation
39 views
Insulated joint located in center of Model 31 Car Retarder
39 views
showing ease of application of track circuit
Velac System Office Equipment
39 views
Computer for Classification Yard
39 views
Model 31 & 32 Car Retarder exhibit in Sale Promotion Center
39 views
Truck fram showing mounting of two short receivers
39 views
Four Indication Cab Signal Equipment Box for Diesel Engine
39 views
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