Unknown (magazine)

Unknown (also known as Unknown Worlds) was a pulp fantasy magazine, edited by John W. Campbell, that was published from 1939 to 1943. Unknown was closely associated with the science fiction magazine Astounding Science Fiction, which was also edited by Campbell at the time; many authors and illustrators contributed to both magazines.

Notable contributions

• "The Book of Ptath," by A. E. van Vogt
• "The Castle of Iron," by L. Sprague de Camp and Fletcher Pratt (Harold Shea, or Incompleat Enchanter Series)
• "Darker Than Your Think," by Jack Williamson
• "Etaoin Shrdlu," by Fredric Brown
• "Fear," by L. Ron Hubbard
• "The Gnarly Man," by L. Sprague de Camp
• "Lest Darkness Fall," by L. Sprague de Camp
• "Divide And Rule," by L. Sprague de Camp
• "Magic, Inc.," by Robert A. Heinlein
• "The Mathematics of Magic," by L. Sprague de Camp and Fletcher Pratt (Harold Shea, or Incompleat Enchanter Series)
• "The Roaring Trumpet," by L. Sprague de Camp and Fletcher Pratt (Harold Shea, or Incompleat Enchanter Series)
• "Sinister Barrier," by Eric Frank Russell
• "Slaves of Sleep," by L. Ron Hubbard
• "Snulbug," by Anthony Boucher
• Early Fafhrd and the Gray Mouser stories including the first, "Two Sought Adventure," by Fritz Leiber
• "The Ultimate Egoist," by Theodore Sturgeon
• "It" by Theodore Sturgeon
• "Typewriter in the Sky," by L. Ron Hubbard
• "The Wheels of If," by L. Sprague de Camp
• "Trouble with Water" by Horace Gold

Unknown also published the first science fiction or fantasy stories by Leiber ("Two Sought Adventure"), Sturgeon ("A God in a Garden"), and James H. Schmitz ("Greenface").

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