1999

Achenbach, Joel in his “Captured by Aliens” (1999) (available on Amazon USA and on Amazon UK) at pages 46-49 (in Chapter 4), 88 (in Chapter 7) of the Simon and Schuster hardback edition.

5

1965

Allen, Tom in his “The Quest: A Report on Extraterrestrial life " (1965) at pages 10-12 (in Chapter 1) of the Chilton hardback edition.

3

1992

Alnor, William M in his “UFO in the New Age” (1992) (available on Amazon USA and on Amazon UK) at pages 18-19 (in the Introduction) of the Baker softcover edition.

2

1997

Ashpole, Edward in his “Where is Everybody?” (1997) (available on Amazon USA and on Amazon UK) at page 196 (in Chapter 11) of the Sigma Press softcover edition.

1

1976

Asimov, Isaac in “Extra-Terrestrial Intelligence : The First Encounter” (1976) (edited by James L Christian) (available on Amazon USA and on Amazon UK) at pages 41-43 (in the unnumbered chapter entitled “Of Life Beyond : Man’s Age-Old Speculations”) of the Prometheus Books softcover edition.

3

1979

Asimov, Isaac in his “Extraterrestrial Civilizations” (1979) (available on Amazon USA and on Amazon UK) at pages 48-55, 57 (in Chapter 3) of the Crown hardback edition, at pages 61-69 of the Pan paperback edition.

9

1998

Bartholomew, Robert E and Howard, George S in their “UFOs and Alien Contact” (1998) (available on Amazon USA and on Amazon UK) at page 61 (in Chapter 1, entitled “Wishing Thinking: The Great American Airship Mania of 1896-97”) of the Prometheus hardback edition.

1

2000

Bergreen, Laurence in his “The Quest For Mars” (2000) (available on Amazon USA and on Amazon UK) at pages 163-169, 184-185 (in Chapter 7) of the Harper hardback edition.

9

1997

Bizony, Piers in his “The Exploration of Mars: Searching for the Cosmic Origins of Life” (1997) (available on Amazon USA and on Amazon UK) at pages 11-12 (in the Foreword) of the Aurum softcover edition.

2

1977

Bova, Ben with Bell, Trudy in “Closeup: New Worlds” (1977) (edited by Bova, Ben with Bell, Trudy) at pages xii-xiii (in the Introduction) of the St Martin’s Press hardback edition.

2

2001

Bullard, Thomas Eddie in “The Encyclopedia of Extraterrestrial Encounters” (2001) (edited by Ronald Story) (available on Amazon USA and on Amazon UK) at pages 328-330 (in an entry entitled “Mars and Martians”) of the New American Library softcover edition, at pages 321-323 of the pdf edition (with the same page numbering in the Microsoft Word edition).

3

2001

Bullard, Thomas Eddie in “The Mammoth Encyclopedia of Extraterrestrial Encounters” (2001) (edited by Ronald Story) (available on Amazon USA and on Amazon UK) at page 397-399 (in an entry entitled “Mars and Martians”) of the Robinson softcover edition.

3

1999

Chambers, Paul in his “Life On Mars” (1999) (available on Amazon USA and on Amazon UK) at pages 22-29 (in Chapter 2 generally), 30-39 (in Chapter 3 generally), 40-49 (in Chapter 4 generally), 50 (in Chapter 5) of the Blandford hardback edition.

29

1969

Chapman, Robert in his “UFO : Flying Saucers Over Britain?” (1969) (also published as “Unidentified Flying Objects”) (available on Amazon USA and on Amazon UK) at pages 151-153 (in Chapter 12) of the Mayflower paperback edition.

3

1998

Clark, Jerome in his “The UFO Book: Encyclopedia of the Extraterrestrial” (1998) (available on Amazon USA and on Amazon UK) at pages 208-209 of the Visible Ink Press softcover edition in an entry entitled “Extraterrestrial Hypothesis and Ufology”.

2

1998

Clark, Jerome in his “The UFO Encyclopedia: The Phenomenon from the Beginning - 2^nd edition : Volume 1:A-K” (1998) (available on Amazon USA and on Amazon UK) at pages 382-383 (in an entry entitled “Extraterrestrial Hypothesis and Ufology” at pages 374-393) of the Omnigraphics hardback edition.

2

2000

Clark, Stuart in his “Life on Other Worlds and How to Find It” (2000) (available on Amazon USA and on Amazon UK) at page 90 (in Chapter 7) of the Springer hardback edition.

1

1993

Clarke, Arthur in his “By Space Possessed” (1993) (available on Amazon USA and on Amazon UK) at pages 52-53, 54 (in Chapter 4), 70 (in Chapter 6) of the Victor Gollancz hardback edition.

4

1969

Condon Report (“Scientific Study of Unidentified Flying Objects”, Edward U Condon (Director) and Daniel S Gillmor (Editor) (1969)) (available on Amazon USA and on Amazon UK) at page 45 (in Section 2 “Summary of the Study”, by Edward U Condon) of the uncorrected version submitted to the Air Force (with the same page numbering in the 3 volume paperbound edition distributed by the National Technical Information Service, US Department of Commerce) at page 32 of the Vision hardback edition (with the same page numbering in the Bantam paperback edition). The first of these editions has the same page numbering as the edition available free online at the following links:

http://ncas.sawco.com/condon/text/contents.htm

http://www.project1947.com/shg/condon/contents.html

1

1986

Crowe, Michael J in his “The Extraterrestrial Life Debate, 1750-1900” (1986) (available on Amazon USA and on Amazon UK) at pages 480-546 (in Chapter 10 generally), 627-644 (in the Notes) of the 1999 Dover softcover edition.

85

2000

Darling, David in his “The Extraterrestrial Encyclopedia” (2000) (available on Amazon USA and on Amazon UK) at pages 63 (in the entry entitled “Canali”), 255-258 (Mars, canals of”), 368-369 (in the entry entitled “Schiaparelli, Giovanni Virginio (1835-1910)”) of the Three Rivers softcover edition.

7

2003

Darling, David in his online encyclopedia, “The Encyclopedia of Astrobiology, Astronomy and Spaceflight” (2003) in the entries entitled “Mars, canals of” and “Schiaparelli, Giovanni Virginio (1835-1910)”. The relevant entries are available online at:

http://www.daviddarling.info/encyclopedia/M/Marscanals.html

http://www.daviddarling.info/encyclopedia/S/Schiaparelli.html

2

1999

Davidson, Keay in his “Carl Sagan: A Life” (1999) (available on Amazon USA and on Amazon UK) at pages 19-20 (in Chapter 1), 70-71 (in Chapter 3), 177, 179, 186-189 (in Chapter 7), 237, 239 (in Chapter 9) of the Wiley softcover edition.

12

1995

Davies, Paul in his “Are we Alone?“ (1995) (available on Amazon USA and on Amazon UK) at pages 7-8 (in Chapter 1) of the Penguin paperback edition.

2

1998

Davies, Paul in his “The Fifth Miracle” (1998) (available on Amazon USA and on Amazon UK) at pages 151-152 (in Chapter 8) of the Penguin Press hardcover edition.

2

1998

Dean, Jodi in her “Aliens in America” (1998) (available on Amazon USA and on Amazon UK) at page 33 (in Chapter 1) of the Cornell University softcover edition.

1

2001

di Fate, Vincent in his “The Science Fiction Art of Vincent Di Fate” (2001) (available on Amazon USA and on Amazon UK) at page 89 (in the unnumbered chapter entitled “Shadows on the Sky - The Early Flying Saucer Era”) of the Paper Tiger hardback edition.

1

1998

Dick, Steven J in his “Life on Other Worlds“ (1998) (available on Amazon USA and on Amazon UK) at pages 25-44, 68-69 (in Chapter 2), 139-149, 145 (in Chapter 5) of the Cambridge hardback edition.

34

1996

Dick, Steven J in his “The Biological Universe” (1996) (available on Amazon USA and on Amazon UK) at pages 62-108, 158 (in Chapter 3), 269-271, 277 (in Chapter 6) of the Cambridge hardback edition.

52

1997

DiGregorio, Barry E in “Mars: The Living Planet” (1997) (by Barry E DiGregorio with Gilbert V Levin and Patricia Ann Straat) (available on Amazon USA and on Amazon UK) at pages 34-44 (in Chapter 1), 60-61 (in Chapter 2) of the Frog hardback edition.

13

1964

Drake, W Raymond in his “Messengers From the Stars” (1964) (Formerly “Gods or Spacemen?”) (available on Amazon USA and on Amazon UK) at pages 77-79 (in Chapter 5) of the Sphere paperback edition.

3

1978

Edelson, Edward in his “Who Goes There?” (1978) (available on Amazon USA and on Amazon UK) at pages 23-26 (in Chapter 2) of the NEL paperback edition (with the same page numbering in the NEL paperback edition combining this book and Chris Boyce’s “Extraterrestrial Encounter).

4

1967

Edwards, Frank in his “Flying Saucers – Here and Now!” (1967) (available on Amazon USA and on Amazon UK) at pages 92-93 (in Chapter 5) of the Lyle Stuart hardback edition, at pages 54-55 of the Bantam paperback edition.

2

1997

Emmons, Charles F in his “At The Threshold: UFOs, Science and the New Age” (available on Amazon USA and on Amazon UK) at page 79 (in Chapter 5) of the Wild Flower Press softcover edition.

1

1975

Fairley, Peter in his “Is there Life in Outer Space?” (1975) (available on Amazon USA and on Amazon UK) at page 83 (in Chapter 6) of the Look-In softcover edition.

1

1980

Feinberg, Gerald and Shapiro, Robert in their “Life Beyond Earth” (1980) (available on Amazon USA and on Amazon UK) at pages 258-263 (in Chapter 9) of the Morrow hardback edition.

6

1976

Flammonde, Paris in his “Ufo Exist!” (1976) (available on Amazon USA and on Amazon UK) at pages 68 (in Chapter 4), 121, 132 (in Chapter 7) of the Ballantine Books paperback edition.

3

1974

Flindt, Max H and Binder, Otto in their “Mankind – Child of the Stars” (1974) (available on Amazon USA and on Amazon UK) at pages 61-63, 65 (in Chapter 3) of the Fawcett paperback edition.

4

1977

Gallant, Roy A in “Beyond Earth : The Search for Extraterrestrial Life” (1977) (available on Amazon USA and on Amazon UK) at pages 103, 105-107 (in Chapter 9) of the Four Winds hardback edition.

4

1957

Gardner, Martin in his “Fads and Fallacies in the Name of Science” (1957) (available on Amazon USA and on Amazon UK) at pages 66 (in Chapter 5), 331 (in the Appendix and Notes) of the Dover softcover edition.

2

1980

Goldsmith, Donald and Owen, Tobias in their “The Search for Life in the Universe” (1980) (available on Amazon USA and on Amazon UK) at pages 2, 6-8 (in Chapter 1), 281, 285 (in Chapter 14) of the Benjamin Cummings softcover edition, at pages 6-10 (in Chapter 1), 316, 322 (in Chapter 13) of the 1992 Addison Wesley softcover revised second edition.

5

1997

Goldsmith, Donald in his “The Hunt For Life On Mars” (1997) (available on Amazon USA and on Amazon UK) at pages 23-25 (in the unnumbered chapter entitled “The Day the World Changed”) of the Dutton hardback edition.

3

1970

Gurney, Gene (USAF Lt Col) and Clare Gurney in their “Unidentified Flying Objects” (1970) (available on Amazon USA and on Amazon UK) at page 110 (in Chapter 8) of the Abelard-Schuman hardback edition.

1

1990

Guthke, Karl S in his “The Last Frontier : Imagining Other Worlds From the Copernican Revolution to Modern Science Fiction: Imagining Other Worlds From the Copernican Revolution to Modern Science Fiction” (1990) (available on Amazon USA and on Amazon UK) at pages 35 (in Chapter 1.3), 350, 354-359, 360, 361 (in Chapter 5.2), 369 (in Chapter 5.3) of the Cornell University softcover edition.

11

1997

Halpern, Paul in his “The Quest For Alien Planets” (1997) (available on Amazon USA and on Amazon UK) at pages 26-32, 34 (in Chapter 1) of the Plenum Trade hardback edition.

8

1998

Hancock, Graham in his “The Mars Mystery” (1998) (available on Amazon USA and on Amazon UK) at pages 6-7 (in Chapter 1), 53-55 (in Chapter 5) of the Crown hardback edition.

5

1997

Harrison, Albert A in his “After Contact: The Human Response to Extraterrestrial Life” (1997) (available on Amazon USA and on Amazon UK) at pages 229-231, 249 (in Chapter 9) of the Plenum Trade hardback edition.

4

1995

Heidmann, Jean in his “Life in the Universe" (1995) (available on Amazon USA and on Amazon UK) at pages 19-20 (in Chapter 1) of the Cambridge softcover edition.

2

1999

Hennessey, Roger in his “Worlds Without End : The Historic Search for Extraterrestrial Life” (1999) (available on Amazon USA and on Amazon UK) at pages 80-89 (in Chapter 9), 99, 106, 107, 109 (in Chapter 10) of the Tempus hardback edition.

14

1987

Hoagland, Richard in his “The Monuments of Mars” (1987) (available on Amazon USA and on Amazon UK) at pages 29-31, 33, 38-39 (in Chapter 3), 48 (in Chapter 4) of the 1992 revised North Atlantic softcover edition.

7

1973

Holiday, F W in his “The Dragon and the Disc” (1973) (available on Amazon USA and on Amazon UK) at pages 152-153 (in Chapter 10) of the Futura paperback edition.

2

1984

Hyams, Ron in “UFOs: Where Do They Come From?” (1984) (edited by Peter Brookesmith) (available on Amazon USA and on Amazon UK) at page 76 (in the unnumbered chapter entitled “Reach for the stars”) of the Black Cat hardback edition. The relevant chapter is an article reprinted from the weekly partwork “The Unexplained”, Volume 1, page 222.

1

1942

Jeans, James (Sir) in “The Quest For Extraterrestrial Life : A Book of Readings” (1980) (edited by Donald Goldsmith) (available on Amazon USA and on Amazon UK) at pages 81-82 (in Chapter 15) of the University Science Books hardback edition. The relevant chapter is a reprint of “Is There Life On the Other Worlds?”, Science, 95 (1942), pages 589ff.

2

1949

Jones, Harold Spencer in his “Life on Other Worlds” (1949) at pages 111-123, 128 (in Chapter 8) of the 1956 revised Mentor paperback edition.

14

1953

Keyhoe, Donald E in his “Flying Saucers from Outer Space” (1953) (available on Amazon USA and on Amazon UK) at page 179 (in Chapter 10) of the Henry Holt hardback edition, page 179-180 of the Tandem paperback edition.

1

1955

Keyhoe, Donald E in his “The Flying Saucer Conspiracy” (1955) (available on Amazon USA and on Amazon UK) at pages 97-100 (in Chapter 9) of the Hutchinson hardback edition.

4

1970

Koch, Howard in his “The Panic Broadcast” (1970) at page 140 (in Chapter 5) of the Avon paperback edition.

1

2000

Koerner, David and LeVay, Simon in their “Here Be Dragons” (2000) (available on Amazon USA and on Amazon UK) at pages 65-66 (in Chapter 3) of the Oxford softcover edition.

2

1999

Kurland, Michael in his “The Complete Idiot's Guide to Extraterrestrial Intelligence” (1999) (available on Amazon USA and on Amazon UK) at pages 29-32 (in Chapter 3) of the Alpha Books softcover edition.

4

2001

Lamb, David in his “The Search for Extraterrestrial Intelligence : A Philosophical Inquiry” (2001) (available on Amazon USA and on Amazon UK) at pages 11-12 (in Chapter 1) of the Routledge softcover edition.

2

1976

Landsburg, Alan in his “In Search of Extraterrestrials” (1976) (available on Amazon USA and on Amazon UK) at pages 133-134 (in Chapter 10) of the Corgi paperback edition.

2

1998

Lemonick, Michael in his “Other Worlds“ (1998) (available on Amazon USA and on Amazon UK) at pages 38-39, 40-41 (in Chapter 1) of the Simon & Schuster hardback edition (with the same page numbering in the Simon & Schuster softcover edition).

4

1963

Ley, Willy in his “Watchers of the Skies” (1963) (available on Amazon USA and on Amazon UK) at pages 289, 292-304 (in Chapter 12) of the Sidgwick and Jackson hardback edition.

14

1908

Lowell, Percival in “The Quest For Extraterrestrial Life : A Book of Readings” (1980) (edited by Donald Goldsmith) (available on Amazon USA and on Amazon UK) at pages 76-79 (in Chapter 14) of the University Science Books hardback edition. The relevant chapter is a reprint from “Mars as the Abode of Life” (1908).

4

1974

Lunan, Duncan in his “Man and the Stars” (1974) (available on Amazon USA and on Amazon UK) at page 60 (in Chapter 3) of the Souvenir Press hardback edition, at page 48 of the Corgi paperback edition.

1

1999

McDonough, Thomas R in “Are We Alone in the Cosmos” (1999) (edited by Ben Bova and Byron Preiss) (available on Amazon USA and on Amazon UK) at pages 82-83, 87 (in Chapter 2) of the ibooks softcover edition.

3

1990

McDonough, Thomas R in “First Contact” (1990) (edited by Ben Bova and Byron Preiss) (available on Amazon USA and on Amazon UK) at pages 64-65, 68 (in Chapter 2) of the NAL Books hardback edition, at pages 83-84, 89 of the Headline paperback edition.

3

1987

McDonough, Thomas R in his “The Search for Extraterrestrial Intelligence - Listening for Life in the Cosmos” (1987) (available on Amazon USA and on Amazon UK) at pages 6, 7-8 (in Chapter 1), 25-27 (in Chapter 2), 37 (in Chapter 3) of the Wiley softcover edition.

7

1997

Michaels, Susan in her “Sightings: UFOs” (1997) (available on Amazon USA and on Amazon UK) at pages 231-232 (in the unnumbered chapter entitled “Life on Mars”) of the Fireside softcover edition.

2

1987

Moore, Patrick and Jackson, Francis in their “Life in the Universe” (1987) (available on Amazon USA and on Amazon UK) at pages 86-87 (in Chapter 3), 93 (in Chapter 5) of the Norton softcover edition.

3

1998

Moore, Patrick in his “On Mars” (1998) (available on Amazon USA and on Amazon UK) at pages 7 (in the Preface), 9 (in Chapter 1), 49-67 (in Chapter 4 generally) of the Seven Dials softcover edition.

21

1976

Moore, Patrick in his “The Next Fifty Years in Space” (1976) (available on Amazon USA and on Amazon UK) at pages 70-71 (in Chapter 5), 121 (in Chapter 10) of the William Luscombe hardback edition.

3

2002

Moseley, James and Pflock, Karl in their “Shockingly Close to the Truth!” (2002) (available on Amazon USA and on Amazon UK) at pages 15 (in James Moseley’s Prologue), 57-58 (in Chapter 2) of the Prometheus hardback edition.

3

1982

Muirden, James in his “Pocket Guide: Astronomy” (1982) at page 122 (in the unnumbered chapter entitled “The Planets”) of the Sidgwick and Jackson hardback edition.

1

1955

Nelson, The Earl in his “There is Life on Mars” (1955) (available on Amazon USA and on Amazon UK) at pages 67-71 (in Chapter 6), 79 (in Chapter 7), 84-92 (in Chapter 8) of the Werner Laurie hardback edition.

15

1998

Parker, Barry in his “Alien Life” (1998) (available on Amazon USA and on Amazon UK) at pages 59, 63-68 (in Chapter 5) of the Plenum Trade hardback edition.

7

1954

Peyton, Green in Hubertus Strughold’s “The Green and Red Planet” (1954) (available on Amazon USA and on Amazon UK) at pages vi-ix (in the Foreword) of the Sidgwick and Jackson hardback edition.

4

1998

Pickover, Clifford in his “The Science of Aliens” (1998) (available on Amazon USA and on Amazon UK) at page 116 (in Chapter 5) of the Basic Books hardback edition.

1

2003

Pillinger, Colin in his “Beagle” (2003) (available on Amazon USA and on Amazon UK) at pages 34, 43-45, 47, 49, 50-51, 53-54, 56-57 (in the unnumbered chapter entitled “Is there Life on Mars?”) of the Faber and Faber hardback edition.

12

1977

Pournelle, Jerry in “Closeup: New Worlds” (1977) (edited by Bova, Ben with Bell, Trudy) at pages 34-40 (in the unnumbered chapter entitled “The Old and New Mars”) of the St Martin’s Press hardback edition.

7

1991

Randles, Jenny and Hough, Peter in their “Looking for the Aliens” (1991) (available on Amazon USA and on Amazon UK) at page 71 (in Chapter 9) of the Blandford softcover edition.

1

2000

Randles, Jenny in her “The Little Giant Encyclopedia of UFOs” (2000) (available on Amazon USA and on Amazon UK) at page 20 (in Part 1, “A UFO Timeline”) of the Sterling softcover edition.

1

1983

Ridpath, Ian in his “Life Off Earth” (1983) (available on Amazon USA and on Amazon UK) at pages 82-83 (in Chapter 7) of the Granada hardback edition.

2

1978

Ridpath, Ian in his “Messages from the Stars” (1978) (available on Amazon USA and on Amazon UK) at pages 55-56 (in Chapter 3) of the Fontana paperback edition.

2

1975

Ridpath, Ian in his “Worlds Beyond” (1975) (available on Amazon USA and on Amazon UK) at pages 110-111, 112 (in Chapter 6) of the Wildwood House softcover edition.

3

1994

Ritchie, David in his “UFO : The Definitive Guide” (1994) (available on Amazon USA and on Amazon UK) at pages 131-132 (in an entry entitled “Mars”) of the MJF hardback edition.

2

1987

Ross, Daniel in his “UFOs and the Complete Evidence from Space: The Truth About Venus, Mars and the Moon” (1987) (available on Amazon USA and on Amazon UK) at pages 60-65 (in Chapter 4) of the Pintado softcover edition.

6

1988

Rothman, Milton A in his “A Physicist's Guide to Skepticism” (1988) at pages 171-172 (in Chapter 7) of the Prometheus hardback edition.

2

1973

Roulet, Alfred in his “The Search for Intelligent Life in Outer Space” (1973) (available on Amazon USA and on Amazon UK) at page 25-26 (in the unnumbered chapter entitled “Hello, Out There”) of the Berkley paperback edition.

2

1980

Sagan, Carl in his “Cosmos“ (1980) (available on Amazon USA and on Amazon UK) at pages 126-132, 156 (in Chapter 5) of the Abacus softcover edition.

8

1975

Sagan, Carl in his “Other Worlds“ (1975) (available on Amazon USA and on Amazon UK) at page 89 of the Bantam paperback edition.

1

1973

Sagan, Carl in his “The Cosmic Connection” (1973) (available on Amazon USA and on Amazon UK) at pages 116 (in Chapter 16), 129-134 (Chapter 18 generally), 194 (in Chapter 27) of the Double Day hardcover edition, with the same page numbering in the Coronet softcover edition.

8

1997

Sagan, Carl in his “The Demon Haunted World” (1997) (available on Amazon USA and on Amazon UK) at pages 49-50, 54 (in Chapter 3) of the Headline softcover edition.

3

1969

Sendy, Jean in his “Those Gods Who Made Heaven and Earth” (1969) (available on Amazon USA and on Amazon UK) at pages 88-89 (in Chapter 17) of the Berkley paperback edition.

2

1999

Shapiro, Robert in his “Planetary Dreams” (1999) (available on Amazon USA and on Amazon UK) at page 189 (in Chapter 9) of the Wiley hardback edition.

1

1966

Shklovskii, Iosef Shmuelovich and Sagan, Carl in their “Intelligent Life in the Universe” (1966) (available on Amazon USA and on Amazon UK) at pages 275-279 (in Chapter 20) of the Picador softcover edition.

5

1998

Shostak, Seth in his “Sharing the Universe” (1998) (available on Amazon USA and on Amazon UK) at pages 23-25, 27 (in Chapter 2), 150 (in Chapter 7) of the Berkeley Hills softcover edition.

5

1966

Stanton, L Jerome in his “Flying Saucers : Hoax or Reality?” (1966) (available on Amazon USA and on Amazon UK) at page 89 (in Chapter 5) of the Belmont paperback edition.

1

1976

Story, Ronald in his “The Space Gods Revealed” (1976) (available on Amazon USA and on Amazon UK) at pages 109-112 (in Chapter 13) of the New English Library paperback edition.

4

1977

Strickland, Joshua in his “Extra-terrestrials on Earth” (1977) (available on Amazon USA and on Amazon UK) at page 84 (in Chapter 7) of the Granada softcover edition.

2

1954

Strughold, Hubertus in his “The Green and Red Planet” (1954) (available on Amazon USA and on Amazon UK) at pages 3, 6 (in Chapter 1) of the Sidgwick and Jackson hardback edition.

2

1972

Sullivan, Walter in “UFO's: A Scientific Debate” (1972) (edited by Carl Sagan and Thornton Page) (available on Amazon USA and on Amazon UK) at page 260 (in Chapter 13) of the Barnes and Noble hardback edition (with the same page numbering in the Norton paperback edition.

1

1964

Sullivan, Walter in his “We Are Not Alone” (1964) (available on Amazon USA and on Amazon UK) at pages 155-160 (in Chapter 12) of the Signet paperback revised editions.

6

1985

Tipler, Frank in “Extraterrestrials: Science and alien intelligence” (1985) (edited by Edward Regis) (available on Amazon USA and on Amazon UK) at page 144 (in Part 4) of the Cambridge University Press softcover edition. The relevant chapter is a reprint of Frank Tipler’s article “Extraterrestrial Intelligent Beings do not Exist” (1980), Quarterly Journal of the Royal Astronomical Society, Volume 21, pages 267-281.

1

2004

Tonnies, Mac in his “After the Martian Apocalypse” (2004) (available on Amazon USA and on Amazon UK) at pages 17-20 (in Chapter 1), 139, 142 (in Chapter 6) of the Paraview Pocket Books softcover edition.

6

1966

Trench, Brinsley Le Poer in his “The Flying Saucer Story” (1966) (available on Amazon USA and on Amazon UK) at page 117 (in Chapter 12) of the revised Tandem paperback edition.

1

1977

Washburn, Mark in his “Mars at Last!” (1977) (available on Amazon USA and on Amazon UK) at pages 32-47 (in Chapter 3 generally), 48 (in Chapter 4), 76 (in Chapter 6), 77 (in Chapter 7), 99-100, 102, 106 (in Chapter 8) of the Abacus paperback edition.

23

2002

Webb, Stephen in his “Where is Everybody?: Fifty Solutions to the Fermi Paradox” (2002) (available on Amazon USA and on Amazon UK) at pages 37-38, 39 (in Chapter 3), 248 (in the Notes and Further Reading) of the Copernicus hardback edition.

4

1980

Welfare, Simon and Fairley, John in their “Arthur C Clarke’s Mysterious World” (1980) (available on Amazon USA and on Amazon UK) at pages 277-285 (in Chapter 11) of the Book Club Associates hardback edition.

9

1990

White, Frank in his “The SETI Factor” (1990) (available on Amazon USA and on Amazon UK) at pages 72-73 (in Chapter 6) of the Walker hardback edition.

2

1999

White, Michael in his “Alien Life Forms : Sci-Fi Explained” (1999) (available on Amazon USA and on Amazon UK) at pages 12-13, 18 (in Chapter 1) of the Penguin paperback edition.

3

1998

White, Michael in his “Life Out There” (1998) (available on Amazon USA and on Amazon UK) at pages 5-6 (in Chapter 1) of the Little, Brown & Co hardback edition.

2

1997

Wilkinson, David in his “Alone in the Universe?” (1997) (available on Amazon USA and on Amazon UK) at page 31 (in Chapter 2) of the Monarch softcover edition.

1

1998

Wilson, Colin in his “Alien Dawn” (1998) (available on Amazon USA and on Amazon UK) at pages 46-47 (in Chapter 2) of the Virgin softcover edition (with the same page numbering in the Virgin paperback edition).

2

1997

Wilson, Damon in his “Strange But True: Aliens” (1997) (available on Amazon USA and on Amazon UK) at pages 151-154 (in Chapter 7) of the Select softcover edition.

4

1998

Wright, Susan in her “UFO Headquarters” (1998) (available on Amazon USA and on Amazon UK) at page 33 (in Chapter 2) of the St Martin’s Press softcover edition.

1

1999

Zubrin, Robert in his “Entering Space: Creating a Spacefaring Civilization” (1999) (available on Amazon USA and on Amazon UK) at pages 110-111 (in Chapter 6) of the Tarcher Putnam hardback edition.

2

1996

Zubrin, Robert in his “The Case for Mars” (1996) (available on Amazon USA and on Amazon UK) at pages 25-27 (in Chapter 2) of the Simon & Schuster softcover edition.

3