Most viewed - Semaphore Signals
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Automatic Signals, Horse Shoe Curve, Kittanning Point - P.R.R.79 views
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S.B. Milwaukee freight passing through automatic interlocking at Knowles, Ill. N.B. home signals in foreground - Milwaukee - Illinois Central crossing79 views
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Spring switch installation on the C. M. St. P. & P.78 views
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Automatic Signals, Horse Shoe Curve, Kittanning Point - P.R.R.77 views
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Automatic signal bridge west of Seward, Pa. - P.R.R.77 views
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Westbound passenger at signal bridge near Seward, Pa. - P.R.R.77 views
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Highway cross. signals at N.B. home signal for El Dorado, end double track - P.R.R.77 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. 77 viewsP. & L. E. CTC installation
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Grade Signals on P.R.R. between Wilsmore and Portage, Pa.76 views
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Automatic interlocking, Knowles, Ill. Milwaukee crossing Illinois Central, Looking West on Illinois Central75 views
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S.B. signal cleared on Milwaukee for S.B. train - Knowles automatic interlocking74 views
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Spring Hill tower and train order signal where CTC panel for Belt Jct. is located - Milwaukee - C. & E. I.72 views
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Spring switch installation at Haverhill, Ia., on the C. M. St. P. & P.72 views
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Red Oak to Balfour C.T.C. - C. B. & Q.71 views
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Spring switch installation on the C. M. St. P. & P.70 views
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Spring switch installation at Ferguson, Ia., on the C. M. St. P. & P.70 views
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Red Oak to Balfour C.T.C. - C. B. & Q.69 views
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Automatic interlocking, Knowles, Ill. Milwaukee crossing Illinois Central, Looking East on Illinois Central68 views
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Looking south toward end double track at El Dorado. Layout controlled from New Portage Jct. - P.R.R.67 views
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Spring switch installation on the C. M. St. P. & P.67 views
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Automatic interlocking - Kansas - A. T. & S. F. 66 views
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Spring switch installation on the C. M. St. P. & P.66 views
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Spring switch installation on the C. M. St. P. & P.65 views
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Looking east toward Missouri River Bridge from eastbound home signal, remote control - M. K. T. - Boonville64 views
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Signal location 364.5 - P.R.R. about 6 mi. west of Warsaw, Ind.64 views
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S-1 mechanical locked spring switch layout on the Wabash at Birmingham, Mo.62 views
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Looking west toward S-1 spring switch layout on Wabash at Birmingham, Mo.61 views
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Signal location 364.5 - P.R.R. about 6 mi. west of Warsaw, Ind.61 views
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Signal location 364.5 - P.R.R. about 6 mi. west of Warsaw, Ind.60 views
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Looking south at single signal location near North Eaton, O. - Big Four RR59 views
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Double signal location south of LaGrange, Ohio, Looking north - Big Four RR59 views
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Northbound freight passing LaGrange, Ohio station, southbound signal no. 29.1 in foreground - Big Four RR59 views
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