Niagara Falls, NY: Fictioneers, 1949. First / First. Paperback. A good copy. Contains Changeling by Ray Bradbury (this is the first publication of this story), and The Wall of Darkness by Clarke (again, the first publication). Also includes works by John D. MacDonald, Damon Knight and Margaret St. Clair. Illustration by Hannes Bok. Chipping and edge wear, pulp paper heavily toned and fragile. Good. Item #13434