UFO History

1998

Childress, David Hatcher in “Lost Continents & The Hollow Earth” (1998) (by David Hatcher Childress and Richard Shaver) at pages 244-252 (in the unnumbered chapter entitled “The Search for The Hollow Earth”) of the Adventures Unlimited softcover edition.

9

2000

Clark, Jerome in his “Extraordinary Encounters : An Encyclopedia of Extraterrestrials and Otherworldly Beings” (2000) (available on Amazon USA and on Amazon UK) at page 123 (in an entry entitled “Hollow Earth”) of the ABC-Clio hardback edition.

1

1992

Clark, Jerome in his “The UFO Encyclopedia: 1st edition: Volume 2 – Emergence of a Phenomenon” (1992) (available on Amazon USA and on Amazon UK) at pages 203-204 (in an entry entitled “Hollow Earth and UFOs”) of the Omnigraphics hardback edition.

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 page 522 (forming part of an entry entitled “Hollow Earth and UFOs” at pages 520-524) of the Omnigraphics hardback edition.

1

1978

Cohen, Daniel in his “The World of UFOs” (1978) (available on Amazon USA and on Amazon UK) at page 126 (in Chapter 16) of the Lippincott hardback edition.

1

2001

Fitzgerald, Randall in “The Encyclopedia of Extraterrestrial Encounters” (2001) (edited by Ronald Story) (available on Amazon USA and on Amazon UK) at page 248 (in an entry entitled “Hollow Earth, The”) of the New American Library softcover edition, at page 243 of the pdf edition (with the same page numbering in the Microsoft Word edition).

1

2001

Fitzgerald, Randall in “The Mammoth Encyclopedia of Extraterrestrial Encounters” (2001) (edited by Ronald Story) (available on Amazon USA and on Amazon UK) at page 300 (in an entry entitled “Hollow Earth, The”) of the Robinson softcover edition.

1

1998

Fitzgerald, Randall in his “The Cosmic Test Tube” (1998) (available on Amazon USA and on Amazon UK) at pages 130-131 (in Section 2) with a one sentence summary at page 371 (in the Guide To Books) of the Moonlake Media softcover edition.

2

1988

Gardner, Martin in his “The New Age - Notes of a Fringe Watcher” (1988) (available on Amazon USA and on Amazon UK) at pages 215-216 (in Chapter 30) of the Prometheus 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 165-166 (in Chapter 16) of the Alpha Books softcover edition.

2

1974

Sladek, John in his “The New Apocrypha” (1974) (available on Amazon USA and on Amazon UK) at pages 36-37 (in Chapter 2) of the Panther paperback edition.

2

1968

Steiger, Brad and Whritenour, Joan in their “The New UFO Breakthrough” (1968) (available on Amazon USA and on Amazon UK) at pages 122-123 (in Chapter 9) of the Tandem paperback edition.

2

1966

Steiger, Brad in his “Strangers from the Skies” (1966) (available on Amazon USA and on Amazon UK) at page 121 (in Chapter 25) of the Award Books paperback edition.

1

1990

X, Commander in his “Underground Alien Bases” (1990) at page 103 (in the unnumbered chapter entitled “Flying Saucers From the Earth’s Interior”) of the Abelard softcover edition.

1