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Quality Control Test Apparatus52 views
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Quality Control Test Apparatus47 views
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Quality Control Test Apparatus46 views
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Quality Control Test Apparatus47 views
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Quality Control Test Apparatus44 views
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Quality Control Test Apparatus44 views
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Quality Control Test Apparatus47 views
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Quality Control Test Apparatus47 views
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Right and Left Hand lay-outs for T-20 and T-21 Switch Stands45 views
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Schematic Drawings showing Operation of a Mechanical Facing Point Lock Applied to a Spring Switch47 views
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Operator using ITC Equipment, Drawn from Photo Taken at Frenchtown on Bel Dell Division, P.R.R.56 views
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Line Drawing of Electro-Pneumatic Interlocking of Cincinnati Terminal, P.R.R.56 views
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Centralized Traffic Control Machine Drawn from Photo of Union Pacific's Las Vegas to Yermo Machine56 views
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Line Drawing of Signal Bridge with Position Light Signals, P.R.R.59 views
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Drawing of Conductor Using ITC Equipment - Taken on Bel Dell Division - PRR54 views
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Drawing - Engineman Using ITC Equipment - Taken on Bel Dell Division - PRR52 views
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"Union" Car Retarder Equipped Yard - Enola Yard, P.R.R.57 views
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Cab Signaling Interior of Cab of one of Rock Island's Rocket Locomotives58 views
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Coded Carrier Control (Electronics)58 views
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Train Communication (Electronics)57 views
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Cab Signaling (Electronics)52 views
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M-22A Gear Assembly52 views
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Railroad Trade Marks from Signalman's Journal70 views
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M-22-A Gear Assembly58 views
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A.T.& S.F.R.R. - Canadian-Waynoka62 views
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T-21 Switch Stand59 views
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79 views
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63 views
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56 views
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Central Railroad of New Jersey65 views
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57 views
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C.T.C. Map76 views
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