Belmont, New York, 1966, 1^st.  B50-730.  Vintage MMPB, 158 pages.  Wraps have a bit of edge and cover wear, wear at corners, some wrinkling on spine, faint cup rings on front wrap; binding tight.  Interior clean and unmarked with tanned pages.  ‘Elsewhere out beyond the orbit of the moon was a huge space station, lost to all Earth tracking.  At its center, where gravity was weakest, lived nine aliens; the rest of the station was filled with almost one thousand male and female mutants.  “Soon, now,” the mutants told each other, “we shall go down and kill them all…”’ (from rear wrap)