Science fiction fanzine
A science fiction fanzine is an amateur or semi-professional magazine published by members of science fiction fandom, from the 1930s to the present day. They were one of the earliest forms of fanzine, and at one time constituted the primary type of science-fictional fannish activity ("fanac").
Origins and history 
The first science fiction fanzine, The Comet, was published in 1930 by the Science Correspondence Club in Chicago. The term "fanzine" was coined in October 1940 by Russ Chauvenet. "Fanzines" were distinguished from "prozines", that is, all professional magazines. Prior to that, the fan publications were known as "fanmags" or "letterzines."
Traditionally, science fiction fanzines were (and many still are) available for "the usual," meaning that a sample issue will be mailed on request; to receive further issues, a reader sends a "letter of comment" (LoC) about the fanzine to the editor. The LoC might be published in the next issue: some fanzines consisted almost exclusively of letter columns, where discussions were conducted in much the same way as they are in internet newsgroups and mailing lists nowadays, though at a relatively slow pace.
During the 1970s and 1980s, some fanzines - especially sercon (serious and constructive) zines devoted to sf and fantasy criticism, and newszines such as Locus - became more professional journals, produced by desktop publishing programs and offset printing. These new magazines were labeled "semiprozines", and were eventually sold rather than traded, and paid their contributors. Some semiprozines publish original fiction. The Hugo Awards recognized semiprozines as a separate category from fanzines in 1984 after Locus won the award for best fanzine several years running. (See Hugo Award for Best Semiprozine). Well-known semiprozines include Locus, Ansible, The New York Review of Science Fiction, and Interzone.
The first science fiction APA was the Fantasy Amateur Press Association (FAPA) formed by a group of science fiction fans in 1937. Some APAs are still active as hardcopy publications, and some are published as virtual "e-zines," distributed on the internet.
Other types of fanzines 
The term "fanzine" is also used to refer to fan-created magazines concerning other topics: the earliest rock-and-roll fanzines were edited by science fiction fans. A significant part of modern computer/Web/Internet slang, abbreviations, etc. is derived from the jargon of the fanzine fans. See fanzine, fanspeak.
The fanzine movement is now well represented on the Web; see webzine.
Fanzine readers and producers naturally gather at science fiction conventions, but there are also small conventions dedicated to fanzines. The first fanzine-only annual convention was Autoclave, held by a Detroit-based fan group for several years in the 1970s. In 1984, the first Corflu was held in Berkeley, California. A second convention, Ditto, started in Toronto in 1988. Both of these conventions continue to take place each year.
See also 
- British Fanzine Bibliography
- efanzines.com This site contains recent fanzines from fans working in the traditions of fanzine fandom. These zines are in pdf format. There are also links to other sites which will be of interest to those who like (or want to know more about) fanzine fandom.
- Fanzines and Articles about Fandom
- Eaton Collection at UC Riverside Home of the Terry Carr, Bruce Pelz, and Rick Sneary fanzine collections.
- Walter A. Coslet fanzine collection at U Maryland Balitimore County
- M. Horvat Fanzine Collection at U. of Iowa and Science Fiction Fanzine Index, Iowa Digital Library.
- Memory Hole: an SF Fanzine bibliography
- Fanzines at the Open Directory Project
- Science fiction fanzines and ephemera collection (Syracuse University)
- Temple University Fanzine Collection