Percival Lowell
1981 / Percival Lowell and the Debate Over Extraterrestrial Life / William C. Heffernan / Journal of the History of Ideas 42 (1981) p. 527 [lien]
1981 / Percival Lowell: Professional Scientist or Interloper? / Norriss S. Hetherington / Journal of the History of Ideas 42 (1981) p. 159 [lien]
1993 / "Fireflies Flashing in Unison": Percival Lowell, Edward Morse and the Birth of Planetology / David Strauss / Journal for the History of Astronomy 24 (1993) p. 157 [lien]
1994 / Percival Lowell, W. H. Pickering and the founding of the Lowell Observatory / David Strauss / Annals of Science 51 (1994) p. 37 [doi]