BibliographyWritings by Clyde W. Tombaugh

This bibliography lists published books and articles, reports, and papers presented at professional meetings and conferences. Tombaugh's reviews of other author's books and articles are listed separately at the end. Items are listed in chronological order.


  1. "Communications: A Bright Meteor." Popular Astronomy vol. 32, no. 6 (June-July 1924): 385.
  2. "Clyde Tombaugh Tells Story of Discovering Ninth Planet." Arizona Republican 15 March 1930.
  3. "Planet Discoverer Tells How He Did It." Science Service Daily Science News Bulletin, 16 March 1930.
  4. "The Sun's New Trans-Neptunian Planet." Science News-Letter vol. 17, no. 467 (22 March 1930): 179.
  5. "My Experience in Amateur Telescope Making." Scientific American vol. 143, no. 4 (October 1930) 268-69.
  6. "Object NGC 5694 a Distant Globular Star Cluster" with C. O. Lampland. Astronomische Nachrichten vol 246, no. 5888 (August 1932): 171.
  7. "Some Small Clusters of Faint Extra-Galactic Nebulae Noted in the Planet Search Program" with C. O. Lampland. Paper presented at the 56th meeting of the American Astronomical Society, 2-5 September 1936. Abstract in Publications of the American Astronomical Society vol. 8, no. 6: 256-57.
  8. "The Great Perseus-Andromeda Stratum of Extra-Galactic Nebulae and Certain Clusters of Nebulae Therein as Observed at the Lowell Observatory." Publications of the Astronomical Society of the Pacific vol. 49, no 291 (October 1937): 259.
  9. "Classification of Extra-Galactic Nebulae in Corvus, Crater and Lower Hydra." Paper presented at the 59th meeting of American Astronomical Society, Bloomington, Indiana, December 1937. Abstract in Publications of the American Astronomical Society vol. 9, no. 4 (January 1939).
  10. "Two New Faint Galactic Star Clusters." Publications of the Astronomical Society of the Pacific vol. 50, no. 295 (June 1938): 171.
  11. "Study of the Observational Capabilities of the University's 27-inch Newtonian Reflector with a Program to Restore the Telescope to Pristine Condition." M.A. thesis, University of Kansas, 1939.
  12. "A Study of a Photograph of the Mare Humorum Region on the Moon." Paper presented at the twelfth annual meeting of the American Association for the Advancement of Science, Southwestern Division, Tucson, Arizona, 22-25 April 1940.
  13. "Meteorites in their Bearing on the Origin of the Surface Features of the Moon." Paper presented at the eighth meeting of the Society for Research on Meteorites, Flagstaff, Arizona, 23-25 June 1941. Abstract published in Contributions of the Society for Research on Meteorites vol. 2 no. 4 (1941): 291-292. (Contributions of the Society... also published in Popular Astronomy vol. 49)
  14. "Three More New Galactic Star Clusters." Publications of the Astronomical Society of the Pacific vol. 53 (August 1941): p.219.
  15. "The Search for the Ninth Planet, Pluto." Astronomical Society of the Pacific Leaflet No. 209, July 1946. Reprinted in Mercury vol. 8, no. 1 (January/February 1979): 4-6.
  16. "Is There Life on Mars?" The Story of Our Time. New York: Grolier Society, Inc., 1949.
  17. "Study of Tracking Telescope Photographic Definition." Technical Note no. 181. Aberdeen Proving Ground, Md.: Ballistic Research Laboratories, March 1950.
  18. "Geological Interpretations of the Markings on Mars." Paper presented at the 83rd meeting of the American Astronomical Society, Bloomington, Indiana, 18-21 June 1950. Abstract published in Astronomical Journal vol. 55 no. 6 (October 1950): 184-85.
  19. "Photographs of Venus at Inferior Conjunction, 1950, from Mule Peak, New Mexico." Paper presented at the 83rd meeting of the American Astronomical Society, Bloomington, Indiana, 18-21 June 1950. Abstract published in Astronomical Journal vol. 55 no. 6 (October 1950): 184.
  20. Foreword to "Theory of Effect of Filters on Contrast of Tracking Telescope Films" by Dr. F. Hanson. Field Note no. 4. White Sands Proving Ground, N. Mex.: White Sands Annex-Ballistic Research Laboratories, 5 December 1951.
  21. "Theory of Reduction of Photographic Observations of the Moon's Upper Limb for Askania Cine-Theodolite Vertical Circle Calibration." Technical Memorandum no. 84. White Sands Proving Ground, N. Mex.: Flight Determination Laboratory, June 1953.
  22. "The Limits of Telescopic Resolution: a Symposium." The Strolling Astronomer vol. 7, no. 8 (Aug. 1953): 108-11.
  23. "Some Research Suggestions for the Coming Oppositions of Mars." Paper presented at the 89th meeting of the American Astronomical Society, Boulder, Colorado, 26-30 August 1953. Abstract in Astronomical Journal vol. 58 no. 8 (December 1953): 231-32.
  24. "Summary of Some Past Experiences with Seeing, and Some Proposed Methods and Equipment for Recording Seeing Behavior Quantitatively." Paper presented at Conference on Stellar Scintillation and Astronomical Seeing at The Ohio State University, Columbus, Ohio, 14-15 October 1953.
  25. "Mars." Missile Away! vol. 2, no. 2 (Summer 1954): 8-12.
  26. "The Planet Mars." Morrison Lecture presented at the first Spring conference of the Western Amateur Astronomers, Fresno, California, 5-6 June 1954.
  27. "A New Feasible Means of Instrumentation for Orbital Vehicles." Paper presented at American Rocket Society meeting, El Paso, Texas, 22-24 September 1954.
  28. "Proposed Geodetic Triangulation from an Unmanned Orbital Vehicle by Means of Satellite Search Technique." Jet Propulsion vol. 25, no. 5 (1955): 232-33.
  29. "The Origin and Development of the Tracking Telescope." Missile Away! vol. 3, no. 2 (Summer 1955): 18-27.
  30. "Interim Report on Search for Small Earth Satellites for the Period 1953-56." ASTIA document no. AD-107843. State College, N. Mex.: New Mexico College of Agriculture & Mechanic Arts, Physical Science Laboratory, 1956.
  31. "Search for Small Satellites of the Moon During the Total Lunar Eclipse of November 18, 1956." The Strolling Astronomer vol. II, nos. 1-6 (1957).
  32. "Search for Small Satellites of the Moon During the Total Lunar Eclipse of November 18, 1956" with B. A. Smith and C. F. Capen, Jr. Paper presented at Astronomical Society of the Pacific meeting, Flagstaff, Arizona, 16-19 June 1957. Abstract in Publications of the Astronomical Society of the Pacific vol. 69, no. 410 (October 1957): 400-401.
  33. "Some Photographic Problems Involved in the Search for Small Natural Satellites of the Earth." Paper presented at the 81st semiannual convention of the Society of Motion Pictures and Television Engineers, 29 April - 3 May 1957, Washington D.C.
  34. "Some Aspects of the Search for Earth Satellites Bearing on Meteorites." Paper presented at the 20th Meeting of the Meteoritical Society, Los Angeles, California, 2-4 September 1957.
  35. "Telescopic Exploration and Our Knowledge of the Lunar World." Paper presented at American Rocket Society meeting, Dallas, Texas, March 1958.
  36. "A Seeing Scale for Visual Observers" with B. A. Smith. Sky & Telescope vol. 17, no. 9 (July 1958): 449.
  37. "Meteorites and Cosmic Dust in Space." In Materials in Space Environment: Proceedings of the Fifth Sagamore Ordnance Materials Research Conference. Syracuse, N. Y.: Syracuse University Research Institute, 1958.
  38. "Where to Land on the Moon" (original title "Aristoteles-Alpine Region as a Possible Landing Area on the Moon"). Proceedings of Lunar and Planetary Exploration Colloquium vol. 1, no. 3 (29 October 1958): 15-19.
  39. "The Search for Small Natural Earth Satellites: Final Technical Report" with J. C. Robinson, B. A. Smith, and A. S. Murrell. University Park, N. Mex.: New Mexico State University, Physical Science Laboratory, 1959.
  40. "Comparison of Lunar and Martian Features." Proceedings of Lunar and Planetary Exploration Colloquium vol. 1, no. 4 (12 January 1959): 38-41.
  41. "Mars - A World for Exploration." Astronautics vol. 4, no. 11 (January 1959): 30-31, 86-89.
  42. "Target: Mars." Space Digest (issued as an insert in Air Force vol. 42, no. 3) vol. 2, no. 3 (March 1959): 66-70.
  43. "The Moon." Paper presented at the Space Environment Symposium at Massachusetts Institute of Technology, Cambridge, Massachusetts, 16 April 1959.
  44. "Could the Satellites of Mars be Artificial?" Astronautics vol. 4, no. 12 (December 1959): 38-39, 54.
  45. "Celestial Bodies III. Moon, Mars, and Venus." In Lectures in Aerospace Medicine, 11-15 January 1960. Brooks Air Force Base, Tex.: School of Aviation Medicine, 1960.
  46. "Reminiscences of the Discovery of Pluto." Sky and Telescope vol. 29, no. 5 (March 1960): 264-70.
  47. "Celestial Bodies II. The Moon." In Lectures in Aerospace Medicine, 16-20 January 1961. Brooks Air Force Base, Tex.: School of Aviation Medicine, 1961.
  48. "Observational Patrol of the Moon and Planets and Analysis of the Nature of Their Markings." Final Report to Geophysics Research Directorate, Air Force Cambridge Research Center. University Park, N. Mex.: New Mexico State University, Research Center, 1961.
  49. "The Trans-Neptunian Planet Search." In Chapter II of The Solar System, vol. III Planets and Satellites, ed. G. P. Kuiper and B. M. Middlehurst. Chicago: University of Chicago Press, 1961.
  50. "Visual and Photographic Observations of Venus and Mars." Appendix 2 in The Atmospheres of Mars and Venus: a Report by the Ad Hoc Panel on Planetary Atmospheres of the Space Science Board prepared by W. W. Kellogg and Carl Sagan. Publication 944. Washington, D. C.: National Academy of Sciences - National Research Council, 1961.
  51. "My Most Exciting Moment." Popular Mechanics vol. 115, no. 2 (February 1961): 143.
  52. "Asteroids and the Trans-Neptunian Planet Search." Proceedings of Lunar and Planetary Exploration Colloquium vol. 2, no. 4 (15 November 1961): 15-17.
  53. Introduction to The Search for Planet X by Tony Simon. New York: Basic Books, 1962.
  54. "Reports of Observatories, 1961-1962: New Mexico State University." Astronomical Journal vol. 67 (1962): 661.
  55. "Life on Mars [response to F. Zigel]." Space World vol. 2, no. 2 (January 1962): 36-37, 58, 61-62.
  56. "Reports of Observatories, 1962-1963: New Mexico State University." Astronomical Journal vol. 68 (1963): 666.
  57. "Some Remarks on the Color of Mars." In Exploration of Mars: Proceedings of the American Astronautical Society Symposium on the Exploration of Mars. Advances in the Astronautical Sciences vol. 15. New York: American Astronautical Society, 1963.
  58. "Symposium Synopsis: The When and What of the Mars Trip," moderator W. O. Roberts, panelists W. H. Clohessy, A. G. W. Cameron, J. Kraft, M. Hunter II, and C. Tombaugh. In Exploration of Mars: Proceedings of the American Astronautical Society Symposium on the Exploration of Mars. Advances in the Astronautical Sciences vol. 15. New York: American Astronautical Society, 1963.
  59. "Stars Above a Kansas Farm." The Furrow vol. 68 (January-February 1963): 2-3, 23.
  60. "Evidence of Faulting in the Crust of Mars, Part I: Grabens." Paper presented at the 114th meeting of the American Astronomical Society, Fairbanks, Alaska, 22-24 July 1963. Abstract in Astronomical Journal vol. 68, no. 8 (October 1963): 546.
  61. "Evidence of Faulting in the Crust of Mars." Paper presented at the second annual meeting of the Working Group on Extraterrestrial Resources, Alamogordo, New Mexico, 23-25 October 1963.
  62. "Observations of the Red Spot on Jupiter" with B. A. Smith. Publications of the Astronomical Society of the Pacific vol. 75, no. 446 (October 1963): 436-40.
  63. "Reports of Observatories: New Mexico State University." Astronomical Journal vol. 69 (1964): 703.
  64. "The Absence of an Aqueous Morphology on Mars and Some Geologic Consequences." Paper presented at the Third Western National Meeting of the American Geophysical Union, Boulder, Colorado, 1965.
  65. "Reminiscences of the Discovery of Pluto." In Wanderers in the Sky. The Motions of Planets and Space Probes, ed. Thornton Page and Lou Williams Page. Sky & Telescope Library of Astronomy vol. I. New York: MacMillan Co., 1965.
  66. "Reports of Observatories: New Mexico State University." Astronomical Journal vol. 70 (1965): 639.
  67. "Letters to the Editor (on the 35th anniversary of the discovery of Pluto)" The SAO News vol. 5, no. 3 (March 1965): 2.
  68. "Some Tentative Geological Conclusions about Mars." Paper presented at the 19th annual meeting of the New Mexico Geological Society, Las Cruces, New Mexico, 7-9 May 1965.
  69. "Provisional Topographic Map of Mars, Mariner IV Region." Springfield, Va.: U. S. Dept. of Commerce, National Bureau of Standards, Institute for Applied Technology, 1968.
  70. "The Search for Pluto and the Prospect of Finding More Planets." Paper presented at the 17th annual convention of the Western Amateur Astronomers, Reno, Nevada, 19-21 August 1965.
  71. "Letter to the Editor." Scientific American vol. 214, no. 1 (1966): 6-8.
  72. "Reports of Observatories: New Mexico State University." Astronomical Journal vol. 71 (1966): 939.
  73. "Evidence that the Dark Areas on Mars are Elevated Mountain Ranges." Nature vol. 209, no. 5030 (1966): 1338.
  74. "Correspondence." The Griffith Observer vol. 30, no. 9 (Sept. 1966): 119-20.
  75. "Reports of Observatories: New Mexico State University." Astronomical Journal vol. 72 (1967): 1122.
  76. "Some Space Goals in the Near Future from the Viewpoint of a Planetary Astronomer." Paper presented at the American Astronautical Society Symposium "Future Space Program and Impact on Range Network Development," Las Cruces, New Mexico, 22-24 March 1967.
  77. "A Survey of Long-Term Observational Behavior of Various Martian Features That Affect Some Recently Proposed Interpretations." Icarus vol. 8, no. 2 (March 1968): 227-58.
  78. "Concepts and Models of the Geology and Mineralogy of Mars." Paper presented at Southwestern Astronomical Conference meeting, Las Cruces, New Mexico, 21-24 August 1968.
  79. "Observatory Reports: New Mexico State University." Bulletin of the American Astronomical Society vol. 1, no. 1 (January 1969): 92-93.
  80. "Geology of Mars." In Advances in Space Science and Technology vol. 10, ed. Frederick I. Ordway III. New York: Academic Press, 1970.
  81. "Observatory Reports: New Mexico State University." Bulletin of the American Astronomical Society vol. 2, no. 1 (1970): 108-10.
  82. "'Magnificent Sight' is Comet Bennett." Las Cruces Bulletin, 9 April 1970, p. 1.
  83. "Observatory Reports: New Mexico State University." Bulletin of the American Astronomical Society vol. 3, no. 1 part II (1971): 166-69.
  84. "Accelerated Advances in Celestial Knowledge." In Communication to the People - an Imperative of National Scope: Conference Proceedings, November 8-9, 1973, Albuquerque, New Mexico. Las Cruces, N. Mex.: REERIO (Regional Environmental Education, Research and Improvement Organization); IMR/AIAA (Inland Missile Range Section, American Institute of Aeronautics & Astronautics), 1974.
  85. "Recollections of Astronomy in 1920's and 1930's." Audio recording presented at the 75th anniverary American Astronomical Society meeting, 1974.
  86. "Faculty Perspectives: A Stellar Search for Planet X." Aggie Panorama vol. 24, no. 4 (March 1975): 10-11.
  87. "Improvement of the Rhodes 16-inch Telescope on Tortugas Mountain." Contributions of the Observatory of New Mexico State University vol. 1, no. 4 (April 1976): 164-65.
  88. "Past Interpretations of Mars in Retrospect." Paper presented at the International Space Hall of Fame dedication conference, Alamogordo, New Mexico, 5-9 October 1976.
  89. "My Early Years at Lowell Observatory." Proceedings of the Southwest Regional Conference for Astronomy and Astrophysics vol. 4 (1979): 87-91.
  90. "My Life and the Discovery of the Planet Pluto." El Palacio (1980).
  91. Out of the Darkness, the Planet Pluto with Patrick Moore. Harrisburg, Pa.: Stackpole Books; London: Lutterworth Press, 1980.
  92. "Planet X" with C. O. Lampland, E. C. Slipher, and P. Lowell. Scientific American vol. 243, no. 1 (1980): 10.
  93. "50 Years of Pluto." Paper presented at Astronomical Society of the Pacific - Western Amateur Astronomers meeting, Tucson, Arizona, 12 July 1980.
  94. "Some Early Vexing Optical and Mechanical Problems of the 13-Inch 'Pluto' Telescope." Icarus vol. 44, no. 1 (October 1980): 2-6.
  95. "La recherche d'une planète trans-neptunienne ou la découverte de Pluton." (English title: "The Trans-Neptunian Planet Search and the Discovery of Pluto.") L'Astronomie vol. 95 (December 1981): 527-45.
  96. "Beyond Pluto." In Yearbook of Astronomy: 1984, ed. Patrick Moore. New York: W. W. Norton, 1984.
  97. "When I Discovered Pluto." In Arizona Memories. Tucson, Ariz.: University of Arizona Press, 1984.
  98. "The Discovery of Pluto: Some Generally Unknown Aspects of the Story." Mercury vol. 15, nos. 3 & 4 (1986).
  99. "Charon." In The Astronomy Encyclopaedia, ed. Patrick Moore. London: M. Beazley, 1987.
  100. "Planet X." In The Astronomy Encyclopaedia, ed. Patrick Moore. London: M. Beazley, 1987.
  101. "Pluto." In The Astronomy Encyclopaedia, ed. Patrick Moore. London: M. Beazley, 1987.
  102. "The Historical Discovery and Recent Confirmation of a New Cataclysmic Variable in Corvus" with D. H. Levy et al. Publications of the Astronomical Society of the Pacific vol. 102 (November 1990): 1321-27.
  103. "Plates, Pluto, and Planets X." Sky & Telescope vol. 81, no. 4 (April 1991): 360-61.
  104. "The Struggles to Find the Ninth Planet." In Completing the Inventory of the Solar System: A Symposium Held in Conjunction with the 106th Annual Meeting of the ASP Held at Lowell Observatory, Flagstaff, Arizona, 25-30 June 1994, ed. T. W. Rettig and J. M. Hahn. San Francisco, Calif.: Astronomical Society of the Pacific, 1994.
  105. "The Discovery of the Ninth Planet, Pluto, in 1930." In Pluto and Charon, ed. S. Alan Stern and David Tholen. Tucson, Ariz.: Univ. of Arizona Press, 1997.

Reviews of Books and Articles

  1. Schroeder, W. Practical Astronomy: A New Approach to an Old Science (New York: Philosphical Library, 1957). Book review in Astronautics vol. 3 no. 3 (March 1958): 44.
  2. Grosser, Morton. The Discovery of Neptune (Cambridge, Mass.: Harvard University Press, 1962). Book review in Publications of the Astronomical Society of the Pacific vol. 75, no. 446 (1963): 470-71.
  3. Koval', I. K. "The Degree of Smoothness of the Continents and Seas of Mars." AIAA Journal vol. 1, no. 10 (October 1963).
  4. Alexander, A. F. O'D. The Planet Uranus: A History of Observation, Theory, and Discovery (New York: American Elsevier Publishing Co., 1965). Book review in Science vol. 150, issue 3704 (December 1965): 1707.
  5. Sandner, Werner. Satellites of the Solar System (New York: American Elsevier Publishing Co., 1965). Book review in Publications of the Astronomical Society of the Pacific vol. 78, no. 465 (December 1966): 561-562.
  6. Alexander, A. F. O'D. The Planet Uranus: A History of Observation, Theory, and Discovery (New York: American Elsevier Publishing Co., 1965). Book review in The Journal of the Astronautical Sciences vol. XIV, no. 4 (July/August 1967): 183.
  7. Hartmann, William K. Moons and Planets: An Introduction to Planetary Sciences (Tarrytown-on-Hudson, N.Y.: Bogden and Quigley, Inc., 1972). Book review in Mercury vol. 2, no. 1 (January/February 1973): 17-18.