↑ Signor, John R. (1988). The Los Angeles and Salt Lake Railroad Company; Union Pacific's Historic Salt Lake Route. San Marino, California: Golden West Books. p.18. ISBN978-0-87095-101-5.
↑ Balkwill, Richard; Marshall, John (1993). The Guinness Book of Railway Facts and Feats (6thed.). Enfield: Guinness Publishing. ISBN978-0-85112-707-1.
↑ "You ought to know: Electro-Motive's Dilworth is dead; diesel pioneer". Railway Age. 165 (16): 40. 21 October 1968.
Santa Fe Railroad (1945), Along Your Way, Rand McNally, Chicago, Illinois.
White, John H. Jr. (1968). A history of the American locomotive; its development: 1830–1880. New York, NY: Dover Publications. ISBN0-486-23818-0.
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