The Door Through Space Illustrated

The Door Through Space is a 1961 science fiction novel by American writer Marion Zimmer Bradley. An expansion of Bradley's story "Bird of Prey", which first appeared in the May, 1957 issue of the magazine Venture, it is her first novel, and was published by Ace Books, bound tête-bêche with Rendezvous on a Lost World by A. Bertram Chandler.