Science-Adventure Books. Vol. 1, No. 5, Spring 1952. NY: Wings Pub. Co., 1952. Includes two complete novels: "The Outcasts of Venus" by Anaximander Powell; "The Humanoids" by Jack Williamson.  Clean, but worn along the edges and slightly damaged at the top and bottom of the spine, but still clean, and the paper is barely discolored and still flexible.