Serpents of Fire: German Secret Weapons, UFOs, and the Hitler/Hollow Earth Connection (Unabridged)

Mehr von Gray Barker, Ruth Anne Leedy, Andrew Colvin & Michael X

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  Beyond the Pale Horse: The Strange Case of Milton William Cooper (Unabridged)

  Gray Barker & Andrew B. Colvin

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  The Most Interesting Man in the World: Nikola Tesla (Unabridged)

  Gray Barker, Nikola Tesla & Andrew Colvin

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  They Knew Too Much About Flying Saucers (Unabridged)

  Gray Barker

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  Men in Black: The Secret Terror Among Us (Unabridged)

  Gray Barker

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  Serpents of Fire: German Secret Weapons, UFOs, and the Hitler/Hollow Earth Connection (Unabridged)

  Gray Barker, Ruth Anne Leedy, Andrew Colvin & Michael X

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  The Ghost of the Philadelphia Experiment Returns (Unabridged)

  Gray Barker & Andrew Colvin

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  The Silver Bridge: The Classic Mothman Tale (Unabridged)

  Gray Barker

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  Flying Ships, Humanoids, and Creatures of the Subterranean World (Unabridged)

  Richard Shaver, Gray Barker, Ray Palmer, Raymond Bernard & T. Lobsang Rampa

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  Inspected by Extraterrestrials: Gray Barker's Extreme Book of UFO Abduction (Unabridged)

  Gray Barker & Andrew Colvin - editor

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  The Strange Case of Dr. M.K. Jessup (Unabridged)

  Gray Barker & Andrew Colvin

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  Saucers of Fear: Nazi UFOs, Alien Abduction, Project Bluebeam, and Other High-Tech Horrors from the X-Files of Saucerian Press (Unabridged)

  Gray Barker

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  Gray Barker's Book of Adamski (Unabridged)

  George Adamski, Gray Barker, Desmond Leslie, Alice K. Wells & Michael G. Mann

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  Flying Saucer Fire and Fury: Aliens in the White House and Other Top-Secret Tales of Ufology - The Best of Gray Barker's Newsletter (Unabridged)

  Gray Barker & Andrew Colvin

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  Saucers of Fire: Nazi UFOs, the Hollow Earth, the Axis Shift, and Other Apocalyptic Assertions from the X-Files of Saucerian Press (Unabridged)

  Gray Barker

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  Gray Barker's Bigfoot Shootout!: Terrifying Tales of Interspecies Conflict (Unabridged)

  Gray Barker & Andrew Colvin

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  When Men in Black Attack: The Strange Case of Albert K. Bender (Unabridged)

  Gray Barker

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  Mysterious Ascension: The Strange Case of Valiant Thor (Unabridged)

  Gray Barker

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  They Knew Too Much About Flying Saucers (Unabridged)

  Gray Barker

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  Selected for Abduction: Gray Barker's 1981 UFO Annual (Unabridged)

  Gray Barker

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  Chasing the Flying Saucers (Unabridged)

  Gray Barker, Rick Hilberg & Andrew Colvin

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  Gray Barker's Book of Saucers (Unabridged)

  Gray Barker

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  Saucerian Review: Report on Flying Saucers (Unabridged)

  Gray Barker

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  Time-Traveling Through Swamp Gas: Strange Tales of Flying Saucer Intrigue from the X-Files of Saucerian Press (Unabridged)

  Gray Barker

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  Gray Barker at Giant Rock (Unabridged)

  Gray Barker

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  Bender Mystery Confirmed (Unabridged)

  Gray Barker

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  Forget About Flying Saucers: You Can't Stop Us, and It Will Only Cause Panic and Disaster: Gray Barker's Extreme Book of Saucers (Unabridged)

  Gray Barker & Andrew Colvin