Fiction Contents Blish, James, --The Trouble with Tribbles (#42, David Gerrold), 1969. * (TV: first aired on December 29, 1967.) --The Last Gunfight (#56, Lee Cronin), 1969. (aka Spectre of the Gun) (TV: first aired on October 25, 1967.) --The Doomsday Machine (#35, Norman Spinrad), 1969. * (TV: first aired on October 20, 1967.) --Assignment: Earth (#55, Gene Roddenberry and Art Wallace), 1969. (TV: first aired on March 29, 1968.) --Mirror, Mirror (#39, Jerome Bixby), 1969. (TV: first aired on October 6, 1967.) --Friday's Child (#32, D. C. Fontana), 1969. (TV: first aired on December 1, 1967.) --Amok Time (#34, Theodore Sturgeon), 1969. * (TV: first aired on September 15, 1967.)