Stargate SG-1 is a 33-book series with 33 released primary works first released in 1999 with contributions by Sabine C. Bauer, Julie Fortune, Sally Malcolm, Holly Scott, Jaimie Duncan, Karen Miller, Sonny Whitelaw, Jennifer Fallon, James Swallow, Suzanne Wood, Tim Waggoner, Steven Savile, Diana Dru Botsford, J. Frances Crane, Peter J. Evans, Amy Griswold, Jo Graham, Melissa Scott, Geonn Cannon, Laura Harper, Laura Harper, Keith R.A. DeCandido, and Susannah Parker Sinard.