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Wallace, David R. (1999). The Bonehunters’ Revenge; Dinosaurs, Greed, and the Greatest Scientific Feud of the Gilded Age. Boston, New York: Houghton Mifflin. 1st ed. Houghton Mifflin.
Vodden, Christy (1992). No Stone Unturned; the First 150 Years of the Geological Survey of Canada. Geological Survey of Canada.