CTC machine, Bena to Tehachapi. Machine at Bakerfield101 views
Brinkley-Pine Bluff101 views
Dexter-Jonesboro101 views
CTC machine, Dexter to Illmo101 views
Damaged CTC equipment returned by Santa Fe101 views
Ash Fork101 views
Slaton-Sweetwater101 views
Bakersfield-Calwa Tower101 views
"BR" Tower - Clairton Installation101 views
Berkeley Robertson101 views
Elko-Salt Lake City Installation101 views
Norwalk Yard101 views
UR Interlocking Machine - New Haven101 views
UR Interlocking Machine Closeup with Exit Button101 views
Grand Central UR Interlocking - Lexington Ave.101 views
Grand Central UR Interlocking - Lexington Ave.101 views
13th St. Birmingham Tower - Type F interlocking101 viewsView looking north from Tower showing relay case, terminal case, dwarf signal and switch movements attached to Hayes derail
13th St. Birmingham Tower - Type F interlocking101 viewsView looking south with signal bride in foreground
Southeast, southwest, and southern approaches during construction101 views
Tower "A" and layout looking north from draw bridge - Boston Terminal101 views
John Poremba101 views
J. E. McMahon101 views
CN (Montreal Yard) CY Cab Signal System - Auxiliary Equipment Box101 views
City Hall Interlocking Machine Room, Camden, N.J.101 viewsDelaware River Joint Commission
Carryphone w/ light101 views
Carrier Frequency Telephone (DU-35086) (Turkey)101 views
AFO Track Transmitter (top view)101 views
Sectional Steel Instrument House101 views
Highway crossing signal with "No Left Turn" sign combination101 views
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