Montreal Installation Field Coding Unit (front view)68 views516A Multiplex Code Control System
City of Philadelphia - Plug-in Relay Cases68 views
Detail of Cast Iron foundation for instrument cases68 views
Factory Wired Steel Case 9'8"68 views
Combination Battery and Relay Housing for Track Cut - Front and Side View with top up68 views
A.C.L. Manchester to Waycross CTC Relay House and Pole Line Drop at S.E. Saginau68 views
C.E. Lane at Rack68 views
Spring switch installation on the C. M. St. P. & P.68 views
Parking Lot Gate68 views
Trial sign for highway traffic control on Penna. turnpike68 views
Trial sign for highway traffic control on Penna. turnpike68 views
Derail, dwf. signal, switch and highway crossing protection, So. Gary Interlocking. Nickel Plate crossing Michigan Central - Type F Elec. Interlocking68 views
Style A-5 E.P. switch movement68 views
Mechanism for SL-8 Electro-Mechanical Switch Lock68 views
Transwestern Station Cabinet (back)68 views
Single Switch Stand for T-20 Switch Signal68 views
C.T.C. Map68 views
"Union" Roller Bearings on long-railed switch points68 views
Line drawing Car Retarder Speed control68 views
Broad and Narrow Band Control - Interlocking68 views
Line drawing for I.T.C. Plug-In Units68 views
Line drawing of Car Retarder advertisement68 views
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