September 1969, Vol. 29, No. 1 [contents page incorrectly states "Vol. 129"]. Cover art by Menzel. STORIES: "Humans, Go Home!" by A. E. van Vogt; "Passerby" by Larry Niven; "Dune Messiah" (serial, part 3 of 5) by Frank Herbert; plus stories and poetry by Joe Haldeman, Wade Wellman, John Fortey, and Dannie Plachta. FEATURES: Editorial by Frederik Pohl; "Martians and Venusians" (essay) by Donald H. Menzel; Galaxy Book Shelf (reviews) by Algis Budrys; "For Your Information" (science essay) by Willy Ley; "Credo: Willy Ley: The First Citizen of the Moon" (obituary) by Lester del Rey. Interior artwork by: Jack Gaughan, M. Gilbert. Editor: Ejler Jakobsson.