In his introduction, Spider says the Heinlein has never been anthologized, the Niven has only been reprinted once in six years, and nobody knows about the Sturgeon. This is only the beginning of finding buried treasure--and that's the theme of this book. Each author chose, and provided an introduction to, the story following theirs (Spider wrote the intro for Heinlein's choice). Contents: Inconstant Moon, by Larry Niven; Spud and Cochise, by Oliver LaFarge; Need, by Theodore Sturgeon; Hop-Friend, by Terry Carr; Duel Scene [Princess Bride], by William Goldman; Seventh Victim, by Robet Sheckley; Portions of This Program, by Dean Ing; They Bite, by Anthony Boucher; The Man Who Traveled in Elephants, by Robert Heinlein; Our Lady's Juggler, by Anatole France.
Used availability for Spider Robinson's Best of All Possible Worlds
April 1980 : USA Mass Market Paperback