Westinghouse Brake & Signal Co. trade brochure "Modern Hump Yard Equipment", containing descriptions of electro-pneumatic and all-electric retarders, point and signal control, etc., 1939? 18pp.
Westinghouse Brake & Signal Co. trade brochure "Modern Hump Yard Equipment", containing descriptions of electro-pneumatic and all-electric retarders, point and signal control, etc., 1939? 18pp.