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Looking east at DeGraff showing power operated switches and signals - DeGraff to Morgan CTC installation - Big Four117 views
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Looking east at Morgan Interlocking on Big Four - DeGraff to Morgan CTC110 views
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No. 92 passing No. 66 at DeGraff - No. 66 operating against current of traffic - DeGraff to Morgan CTC installation - Big Four104 views
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Tower at corssing of Nickle Plate and D. T. & I. - Leipsic, Ohio - Type F interlocking105 views
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Looking west No. 66 crossing to eastbound main at DeGraff - DeGraff to Morgan CTC installation - Big Four91 views
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Westbound home signal on the eastern route at Tower 1 Rigby - This is reverse running signal Tower 1 to AR tower - - Dover to Rigby CTC - B. & M. RR150 views
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Eastern route looking eat at Tower 1- Dover to Rigby CTC - B. & M. RR131 views
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Showing new cross-over to be used for reverse running Tower 1 to Grand Beach - Tower 1 Rigby looking east - Dover to Rigby CTC - B. & M. RR111 views
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Automatic signal bridge east of Seward, Pa. - P.R.R.97 views
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Automatic Signals on P.R.R. near Seward, Pa.98 views
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Automatic Signals at Kittanning Point, Horse Shoe Curve - P.R.R.94 views
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Westbound Freight on Horse Shoe Curve at Kittanning Point - P.R.R.86 views
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Automatic Signals, Horse Shoe Curve, Kittanning Point - P.R.R.80 views
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Automatic Signals, Horse Shoe Curve, Kittanning Point - P.R.R.83 views
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Automatic signal bridge west of Seward, Pa. - P.R.R.80 views
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Westbound passenger at signal bridge near Seward, Pa. - P.R.R.81 views
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Grade Signals on P.R.R. between Wilsmore and Portage, Pa.80 views
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S-1 Mechanical Facing Point Lock Equipment on the C. G. W. RR at South St. Paul91 views
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S-1 Mechanical Facing Point Lock installation on the C. G. W. Railroad93 views
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Spring Switch Installation - Wabash R.R.116 views
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Spring Switch Installation - Wabash R.R.87 views
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Red Oak to Balfour C.T.C. - C. B. & Q.85 views
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Red Oak to Balfour C.T.C. - C. B. & Q.72 views
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Red Oak to Balfour C.T.C. - C. B. & Q.75 views
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Spring Hill Tower and train order signal, CTC Belt Jct. - Milwaukee - C. & E. I. RR89 views
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Remote control train order signals at Trimble, Ill. - Big Four87 views
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Spring Hill tower and train order signal where CTC panel for Belt Jct. is located - Milwaukee - C. & E. I.76 views
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Automatic inter. Knowles, Ill. - Milwaukee crossing Illinois Central - Looking north on Milwaukee 99 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 crossing82 views
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Automatic interlocking, Knowles, Ill. Milwaukee crossing Illinois Central, Looking East on Illinois Central74 views
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Automatic interlocking, Knowles, Ill. Milwaukee crossing Illinois Central, Looking West on Illinois Central78 views
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S.B. signal cleared on Milwaukee for S.B. train - Knowles automatic interlocking77 views
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