- The Science Fiction and Fantasy Writers of America
- Society of Children’s Book Writers and Illustrators
and Member of the Minnesota Chapter of the Society of Children’s Book Writers and Illustrators
- The International Association of Media Tie-In Writers
- The Mythopoeic Society, which studies the writings of J.R.R. Tolkien, C.S. Lewis, and other fantasy authors.
- The Doctor's Exchange (Far Beyond the Stars), the official Siddig El Fadil/Alexander Siddig fan club.
- Fanderson, the Official Appreciation Society for the Film and Television Productions of Gerry Anderson.
- Producer of a public access TV interview show for genre authors, TV Bookshelf