 Last additions - Shop Photos, Solid State Systems, & Special Photos
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M-22A Gear Assembly100 viewsApr 22, 2017
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Cab Signaling (Electronics)100 viewsApr 22, 2017
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Train Communication (Electronics)102 viewsApr 22, 2017
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Coded Carrier Control (Electronics)104 viewsApr 22, 2017
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Cab Signaling Interior of Cab of one of Rock Island's Rocket Locomotives109 viewsApr 22, 2017
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"Union" Car Retarder Equipped Yard - Enola Yard, P.R.R.109 viewsApr 22, 2017
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Drawing - Engineman Using ITC Equipment - Taken on Bel Dell Division - PRR100 viewsApr 22, 2017
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Drawing of Conductor Using ITC Equipment - Taken on Bel Dell Division - PRR104 viewsApr 22, 2017
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Line Drawing of Signal Bridge with Position Light Signals, P.R.R.108 viewsApr 22, 2017
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Centralized Traffic Control Machine Drawn from Photo of Union Pacific's Las Vegas to Yermo Machine104 viewsApr 22, 2017
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Line Drawing of Electro-Pneumatic Interlocking of Cincinnati Terminal, P.R.R.108 viewsApr 22, 2017
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Operator using ITC Equipment, Drawn from Photo Taken at Frenchtown on Bel Dell Division, P.R.R.107 viewsApr 22, 2017
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Schematic Drawings showing Operation of a Mechanical Facing Point Lock Applied to a Spring Switch89 viewsApr 22, 2017
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Right and Left Hand lay-outs for T-20 and T-21 Switch Stands85 viewsApr 22, 2017
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New York, Ontario & Western R.R. Map71 viewsApr 22, 2017
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Hands Holding C.T.C. Machine Ad No. 301478 viewsApr 22, 2017
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Close up View of Locking Plunger and Lock Rod S-20 Mechanical Facing Point Lock74 viewsApr 22, 2017
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Redispatching by C.T.C. in Territory Handling 25 Trains Daily72 viewsApr 22, 2017
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Application of T-20 Switch Stand66 viewsApr 22, 2017
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Single Switch Stand for T-20 Switch Signal68 viewsApr 22, 2017
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78 viewsApr 22, 2017
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