Unknown

Unknown (also published as Unknown Worlds and Unknown Fantasy Fiction) was an American pulp fantasy fiction magazine, published from 1939 to 1943 by Street & Smith, and edited by John W Campbell, which was also edited by Campbell at the time; many authors and illustrators contributed to both magazines.

• Published 1939 - 1943

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Magazines listed for Unknown Fantasy Fiction:

September 1940
vol - 4:1

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Magazines listed for Unknown Worlds:

February 1943
vol - 6:6