Stargate SG-1: The Illustrated Companion are reference books to the seasons of Stargate SG-1. The following books are available; * Stargate SG-1: The Illustrated Companion Seasons 1 and 2 * Stargate SG-1: The Illustrated Companion Seasons 3 and 4 * Stargate SG-1: The Illustrated Companion Seasons 5 and 6 * Stargate SG-1: The Illustrated Companion Seasons 7 and 8 * Stargate SG-1: The Illustrated Companion Season 9 * Stargate SG-1: The Illustrated Companion Season 10