Art Widner Forrest J Ackerman Piers Anthony Marion Zimmer Bradley Howard DeVore Damon Knight Jacqueline Lichtenberg Russ Manning Sam Moskowitz Jack Speer Donald A. Wollheim Ray Bradbury References External links Official web site The National Fantasy Fan, National Fantasy Fan Federation - entry at the National Library of Australia Science fiction fandom Fantasy fandom Horror fandom Science fiction organizations Organizations established in 1941 Organizations based in the United States