Portland, Oregon: Perry Press, 1952. Khaki cloth. Page edges lightly yellowed, else fine. Jacket has chips and tears to rear panel, with a large chip (2.5 x 8 cm) at bottom; flap price punched out; good otherwise. Triple columns, small type, dense. Index. "No serious student of the genre should be without it." - Burgess, Reference Guide to Science Fiction, Fantasy and Horror, 149. 1 kg. ; Quarto; (xvi), 184 pages