by Isaac Asimov, Martin H. Greenberg, Joseph D. Olander, Cyril M. Kornbluth, Larry Niven, Charles E. Fritch, Bill Pronzini, George R. R. Martin, Jerome Bixby, Ambrose Bierce, Edward D. Hoch, Alexei Panshin, Martin Gardner, Steven Utley, Gregory Benford, Richard Wilson, Robert Sheckley, Roger Zelazny, Damon Knight, Reginald Bretnor, Frederik Pohl, Laurence M. Janifer, James Blish, Joanna Russ, Ray Russell, Edward Wellen, Donald E. Westlake, Ben Bova, Barry N. Malzberg, Fred Saberhagen, Fritz Leiber, Karen Anderson, Bob Shaw, William F. Nolan, Henry Slesar, Dannie Plachta, Edward Rager, Hayford Peirce, Jeffrey S. Hudson, Walter S. Tevis, James Edward Sutherland, Joe L. Hensley, Duane Ackerson, Stephen Goldin, Robert Emmett Toomey Jr., Alfred Bester, Anthony Boucher, Nelson Slade Bond, F. M. Busby, Maggie Nadler, Grant Carrington, Keith Laumer, E. Michael Blake, James E. Gunn, Paul Dellinger, Lee Killough, Thomas F. Monteleone, Robert T. Kurosaka, James E. Thompson, Robert L. Fish, Bruce McAllister, Paul Bond, Mildred Downey Broxon, Alan Edward Nourse, David Bischoff, Ralph Milne Farley, Daniel A. Darlington, Walt Liebscher, K. W. MacAnn