HH: "I was mulling over all the possibilities inherent in the parallel world theme when I received a letter from Bob Silverberg. He needed new stories for an anthology he was putting together, New Dimensions. Did I have anything? Yes I did. A parallel world that existed not because of the outcome of a major war or battle, but simply because of the deaths of two men out of all the billions in history." (Best of Harry Harrison). PUBLICATION HISTORY New Dimensions 1, edited by Robert Silverberg. New York: Doubleday, 1971, hbk. New Dimensions 1, edited by Robert Silverberg. New York: Avon, 1973, pbk. Best Science Fiction Stories of the Year: 1971, edited by Lester Del Rey. New York: Dutton, 1972, hbk. The Best of Harry Harrison, June 1976. (British editions only) The Best SF Stories. London: Hamlyn, 1977, hbk.