World's Best Science Fiction 1966 by Donald A. Wollheim, David I. Masson, Lin Carter, Jonathan Brand, R.A. Lafferty, Fred Saberhagen, Christopher Anvil, Fritz Leiber, Arthur C. Clarke, Ron Goulart, Larry Niven, Vernor Vinge, Clifford D. Simak, James H. Schmitz, Harlan Ellison, Joseph Green, Terry Carr