F-Units The Locomotive That Revolutionized Railroading kk AS NEW

New York: Quadrant, 1983. Paperback. In exceptionally good condition. Demy table, [8.5 by 11inches], paperbound with pictorial covers, pp. 80. Fully illustrated with b-w halftones. Please feel free to inquire as to particulars and/or additional photographs. ... EMD F-units were a line of diesel-electric locomotives produced between November 1939 and November 1960 by General Motors Electro-Motive Division and General Motors-Diesel Division. Final assembly for all F-units was at the GM-EMD plant at La Grange, Illinois and the GMDD plant in London, Ontario, Canada. They were sold to railroads throughout the United States, Canada, Mexico and a few were exported to Saudi Arabia. The term F-unit refers to the model numbers given to each successive type (i.e. F3, F7, etc.), all of which began with the letter F. The "F" originally meant Fourteen, as in 1,400 horsepower, not F as in Freight. Longer EMD E-units for passenger service had twin 900 horsepower diesel engines (called "prime movers" in this type of application). The "E" meant Eighteen as in 1,800 horsepower. Similarly, for early model EMD switchers "S" meant Six hundred and "N" meant Nine hundred horsepower.