High Quality Content by WIKIPEDIA articles! The Magazine of Fantasy Science Fiction (later Fantasy Science Fiction and usually referred to as just F SF) is a digest-size American fantasy and science fiction magazine first published in 1949 by Mystery House and then by Fantasy House. Both were subsidiaries of Lawrence Spivak`s Mercury Publications, which took over as publisher in 1958. Spilogale, Inc. has published the magazine since 2001. Since the April/May 2009 issue, it is published bimonthly with 256 pages per issue.