Derail, dwf. signal, switch and highway crossing protection, So. Gary Interlocking. Nickel Plate crossing Michigan Central - Type F Elec. Interlocking68 views
Power operated switch at end of double track - State Line 93 miles away from Peru - Wabash R.R.68 views
Mechanism for SL-8 Electro-Mechanical Switch Lock68 views
68 views
TVL Amplifier Unit68 views
Steel Mill Carrier Control - Power Supply (Receiver)68 views
Pacific Light & Gas Co. Cabinets (Pipeline)68 views
Dept. 50 Pipeline (Production and Assembly)68 views
Dept. 50 Pipeline (Production and Assembly)68 views
Explosion Proof Cabinet #4 & Engine Sequence Rack #4 - Transcontinental Gas Pipe Line Corp.68 views
Trans Canada (Field Station Cabinet) (front)68 views
Trans Canada (Office Cabinet) (back)68 views
Line drawing of Car Retarder advertisement68 views
T & NO 550 Flexicode System68 views
Limeville - Parsons67 views
Columbus - Cummings67 views
N.J. Cabin - Riverton Installation67 views
N.J. Cabin - Riverton Installation67 views
Logan - Monitor67 views
Logan - Monitor67 views
Cabin Creek "KD" Interlocking67 views
Birmingham, Mo.67 views
Savannah-Hamlet67 views
Savannah-Hamlet67 views
CTC panel at Savannah on Savannah-Thallman Section67 views
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