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Quality Control Test Apparatus31 views
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Quality Control Test Apparatus26 views
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Quality Control Test Apparatus28 views
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Quality Control Test Apparatus27 views
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Quality Control Test Apparatus27 views
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Quality Control Test Apparatus26 views
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Quality Control Test Apparatus28 views
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Quality Control Test Apparatus28 views
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Right and Left Hand lay-outs for T-20 and T-21 Switch Stands25 views
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Schematic Drawings showing Operation of a Mechanical Facing Point Lock Applied to a Spring Switch27 views
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Operator using ITC Equipment, Drawn from Photo Taken at Frenchtown on Bel Dell Division, P.R.R.33 views
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Line Drawing of Electro-Pneumatic Interlocking of Cincinnati Terminal, P.R.R.35 views
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Centralized Traffic Control Machine Drawn from Photo of Union Pacific's Las Vegas to Yermo Machine36 views
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Line Drawing of Signal Bridge with Position Light Signals, P.R.R.38 views
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Drawing of Conductor Using ITC Equipment - Taken on Bel Dell Division - PRR34 views
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Drawing - Engineman Using ITC Equipment - Taken on Bel Dell Division - PRR32 views
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"Union" Car Retarder Equipped Yard - Enola Yard, P.R.R.38 views
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Cab Signaling Interior of Cab of one of Rock Island's Rocket Locomotives37 views
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Coded Carrier Control (Electronics)38 views
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Train Communication (Electronics)37 views
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Cab Signaling (Electronics)30 views
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M-22A Gear Assembly31 views
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Railroad Trade Marks from Signalman's Journal47 views
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M-22-A Gear Assembly37 views
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A.T.& S.F.R.R. - Canadian-Waynoka42 views
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T-21 Switch Stand37 views
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53 views
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43 views
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36 views
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Central Railroad of New Jersey42 views
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40 views
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C.T.C. Map52 views
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