/ Alan E. Nourse Rocket to Limbo (1959) D-391 SF John Brunner The World Swappers / A. E. van Vogt Siege of the Unseen (1959) D-403 SF Murray Leinster The Mutant Weapon / The Pirates of Zan (1959) D-407 SF Poul Anderson We Claim These Stars! / Robert Silverberg The Planet Killers (1959) D-413 SF Harlan Ellison The Man With Nine Lives / A Touch of Infinity (1959) D-421 SF Philip K. Dick Dr. Futurity / John Brunner Slavers of Space (1960) D-427 SF Robert Moore Williams World of the Masterminds / To the End of Time and Other Stories (1960) D-431 SF A. E. van Vogt Earth's Last Fortress / George O. Smith Lost in Space (1960) D-437 SF Andre Norton The Sioux Spaceman / Richard Wilson And Then The Town Took Off (1960) D-443 SF Manly Wade Wellman The Dark Destroyers / Brian W. Aldiss Bow Down to Nul (1960) D-449 SF Gordon R. Dickson The Genetic General / Time to Teleport (1960) D-453 SF Kenneth Bulmer The Earth Gods Are Coming / Margaret St. Clair The Games of Neith (1960) D-457 SF Philip K. Dick Vulcan's Hammer / John Brunner The Skynappers (1960) D-465 SF John Brunner The Atlantic Abomination / Donald A. Wollheim (as David Grinnell) The Martian Missile (1960) D-471 SF John Brunner Sanctuary in the Sky / Jack Sharkey The Secret Martians (1960) D-479 SF Wilson Tucker To the Tombaugh Station / Poul Anderson Earthman Go Home! (1960) D-485 SF Robert A. W. Lowndes The Puzzle Planet / Lloyd Biggle, Jr. The Angry Espers (1961) D-491 SF Fritz Leiber The Big Time / Fritz Leiber The Mind-Spider and Other Stories (1961) D-497 SF John Brunner (as Keith Woodcott) I Speak For Earth / Ray Cummings Wandl The Invader (1961) D-507 SF Kenneth Bulmer Beyond the Silver Sky / John Brunner Meeting At Infinity (1961) D-509 SF Andre Norton The Beast Master / Star Hunter (1961) D-517 SF Clifford Simak The Trouble With Tycho / A. Bertram Chandler Bring Back Yesterday (1961) F Series F-104 SF Kenneth Bulmer No Man's World / Poul Anderson Mayday Orbit (1961) F-108 SF G. McDonald Wallis The Light of Lilith / Damon Knight The Sun Saboteurs (1961) F-113 SF Charles L. Fontenay Rebels of The Red Planet / J. T. McIntosh 200 Hundred Years to Christmas (1961) F-117 SF Marion Zimmer Bradley The Door Through Space / A. Bertram