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Quality Control Test Apparatus113 views
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Quality Control Test Apparatus98 views
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Quality Control Test Apparatus97 views
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Quality Control Test Apparatus99 views
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Quality Control Test Apparatus102 views
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Quality Control Test Apparatus102 views
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Quality Control Test Apparatus98 views
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Quality Control Test Apparatus100 views
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Right and Left Hand lay-outs for T-20 and T-21 Switch Stands88 views
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Schematic Drawings showing Operation of a Mechanical Facing Point Lock Applied to a Spring Switch93 views
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Operator using ITC Equipment, Drawn from Photo Taken at Frenchtown on Bel Dell Division, P.R.R.110 views
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Line Drawing of Electro-Pneumatic Interlocking of Cincinnati Terminal, P.R.R.111 views
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Centralized Traffic Control Machine Drawn from Photo of Union Pacific's Las Vegas to Yermo Machine108 views
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Line Drawing of Signal Bridge with Position Light Signals, P.R.R.115 views
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Drawing of Conductor Using ITC Equipment - Taken on Bel Dell Division - PRR107 views
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Drawing - Engineman Using ITC Equipment - Taken on Bel Dell Division - PRR105 views
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"Union" Car Retarder Equipped Yard - Enola Yard, P.R.R.113 views
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Cab Signaling Interior of Cab of one of Rock Island's Rocket Locomotives113 views
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Coded Carrier Control (Electronics)107 views
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Train Communication (Electronics)108 views
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Cab Signaling (Electronics)107 views
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M-22A Gear Assembly107 views
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Railroad Trade Marks from Signalman's Journal124 views
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M-22-A Gear Assembly109 views
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A.T.& S.F.R.R. - Canadian-Waynoka114 views
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T-21 Switch Stand107 views
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132 views
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114 views
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107 views
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Central Railroad of New Jersey117 views
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110 views
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C.T.C. Map133 views
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