Strauss D. (1994). “Lowell, Percival, Pickering, W.H. and the founding of the Lowell Observatory”. Annals of Science. 51 (1): 37–58. doi:10.1080/00033799400200121.
David Strauss, Percival Lowell: The Culture and Science of a Boston Brahmin (Cambridge: Harvard University Press, 2001)
William Graves Hoyt, Lowell and Mars (Tucson: University of Arizona Press, 1976)
William Lowell Putnam, The Explorers of Mars Hill: A Centennial History of Lowell Observatory, 1894-1994 (New Hampshire: Phoenix Publishing, 1994)
