Eridani Triad was a media science fiction fanzine devoted to the original television series, Star Trek.
Published by Judith Brownlee, and edited by Gail Barton and Doris Beetem (the Younger), the fanzine appeared in the 1970s. Three issues were published.
The first issue was published in 1970. Consisting of 102 pages, it features artwork by Gail Barton, Debby Bethurem, and Ed Stein; plays by Doris Beetem; and articles by Gail Barton, Doris Beetem, and Judith Brownlee.
Issue 2 appeared in 1971. It was 120 pages, featuring articles by Gail Barton, Doris Beetem, fiction by Doris Beetem, and Judith Brownlee, and artwork by Dee Beetem, and D. Carol Roberts. Letters caqme from Barry Atwater, among others.
Issue 3 came out in 1972, with 122 pages. Artwork was by M.L. Barnes, Gail Barton, Liz Danforth, Bill Guy, Jim McLeod, Roz Oberdieck, D. Carol Roberts, and Mary Ann Walther. Articles were by M.L. Barnes, Doris Beetem, and Hal Clement; poetry by Gail Eirann, and Carrie Peak; and other contributions from Ruth Berman (Inside Star Trek, T-Negative), Judith Brownlee, Devra Langsam (Spockanalia), Jacqueline Lichtenberg, and James Tiptree, Jr., with the story "Meet Me At Infinity".
Some of Doris Beetem's Star Trek stories would later be published in paperback collections such as the book Star Trek: The New Voyages (1976), along with the stories of other early Star Trek writers such as Ruth Berman and Juanita Coulson. Her science fiction stories appear in anthologies such as Decades of Science Fiction (1998).