Vol. 38, No. 6, June 1964. Cover art by Alex Schomburg illustrating "Tin Lizzie" by Randall Garrett. OTHER STORIES: Condition of Survival by Barry P. Miller; The Pirokin Effect by Larry Eisenberg; The Sphinx by Robert F. Young. FEATURES: Editorial (unaccredited); SF Profile: John Wyndham (essay) by Sam Moskowitz; The Spectroscope (book reviews) by Robert Silverberg; ". . . Or So You Say" (letters). INTERIOR ARTISTS: Virgil Finlay, Schelling.