(written from a Production point of view)
T-Negative was a fanzine operated by Ruth Berman and published in the 1960s and 70s. It was completely devoted to Star Trek-related fan fiction and articles. Berman started the magazine, when Inside Star Trek, on which she also served as publisher and editor, folded in June 1969. T-Negative, which was named after the Vulcan blood type ran for 35 issues from 1969 until 1979.
Dorothy Jones wrote a series of Star Trek stories for this magazine entitled "Dorothy and Myfanwy" throughout the late 1960s and early 1970s. Jacqueline Lichtenberg's early Kraith tales first appeared here. Greg Jein, who also submitted artwork for the publication, wrote an influential analysis of starship registries for this magazine entitled The Case of Jonathan Doe Starship, published in the April 1973 issue.