Marion Zimmer Bradley (1930-1999) was an American author of fantasy novels such as "The Mists of Avalon" and the Darkover series, often with a feminist outlook. Her science fiction novel "The Colours Of Space" (1963) shows the influence of such writers as Leigh Brackett, Edmond Haminton, and Henry Kuttner and set the stage for her later success with the Darkover seriets.