 Most viewed
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Looking west at Tower "A"- Allegheny Summit CTC - C. & O.81 views
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Signal location exactly on water shed - Allegheny Summit CTC - C. & O.81 views
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Double signal location south of LaGrange, O., Looking north - Big Four RR81 views
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Automatic Signals, Horse Shoe Curve, Kittanning Point - P.R.R.81 views
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Grade Signals on P.R.R. between Wilsmore and Portage, Pa.81 views
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Automatic interlocking, Knowles, Ill. Milwaukee crossing Illinois Central, Looking West on Illinois Central81 views
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Automatic signal location 455, middle arm governs trains westbound on P. & L. E. - Lower arm governs trains westbound on B. & O. 81 viewsP. & L. E. CTC installation
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A.C.L. Waycross to Jessup - Highway Crossing Gates at Jessup81 views
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HC-100 Highway Crossing Signal (Lights & Arm only)81 views
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HC-81 Highway Crossing Signal81 views
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M-23A Switch Machine81 views
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RV-1 Rectifier81 views
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RV-781 views
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81 views
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Drawing for advertisment R-2402 - "There's a better way to communicate today"81 views
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Line drawing of Route Interlocking at Westchester Yard81 views
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C.M.St.P.& P. R.R. - Airline Yard81 views
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High C.T.C. System Relay Racks (516)81 views
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Train Graph Out of Case81 views
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Pocatello Cranger Demonstration Racks - Showing Wiring81 views
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Sewell - MacDougal80 views
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"R" Cabin - Fulton Installation80 views
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St. Albans - Barboursville80 views
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Peru - Griffith Installation80 views
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"MS" Cabin80 views
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Peru Installation - 15' TCC Console 80 views(right back)
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CTC installation, Polo to Birmingham80 views
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Hadley to Van Loon80 views
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Montreal Installation Field Coding Unit80 views516A-Multiplex Code Control System
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Puerto-Ordaz-Cerro-Bolivar Installation80 viewsNarrow Band Control Panel - part of panels showing relays
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#9 Palm Land approaching N.E. Garnett80 views
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Atlanta to Birmingham CTC (W.E. Power Springs)80 views
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