tag="{http://www.w3.org/1999/xhtml}a">18 Zerah Colburn, Locomotive Engineering and the Mechanism of Railways, …, London, 1871, p. 99. Zerah Colburn (1832–1870) was one of the best informed and most vocal authorities on 19th-century American locomotive construction. He not only designed advanced machines while working at the New Jersey Locomotive Works but also advocated many reforms in locomotive design. He published the Railroad Advocate in New York City for several years. In 1858 he became editor of The Engineer and in 1866 founded the technical journal Engineering.

19 American Railway Review, June 8, 1860, vol. 2, p. 392. Holley was a well known authority on locomotive engineering and the author of several books on the subject.

20 Engineering May 11, 1866, vol. 1, p. 313. By this time (1866), the Eastern Counties Railway had become part of the Great Eastern system.

21 American Railway Review July 26, 1860, vol. 2, p. 38.

22 Whetstone was chief designer for Niles & Co., a Cincinnati locomotive builder. His invention apparently did not receive a test, since the company closed shortly before the patent was granted. No other builder seemed interested.

23 Paul T. Warner, “Mogul Type Locomotives,” Railway and Locomotive Historical Society Bulletin no. 100, April 1959.

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