Pohl, Frederik. "Day Million." Rogue Feb. 1966. Coll. Day Million. New York: Ballantine, 1970. The Best of Frederik Pohl. Lester del Rey, ed. New York: Nelson Doubleday, 1975. Frequently rpt., including Nebula Award Stories #2. Brian Aldiss and Harry Harrison, eds. New York: Doubleday, 1967. First two edns. of Science Fiction: The Future. Dick Allen, ed. New York: Harcourt, 1971, 1983.
See for machine-recording and storage of human personalities, a motif Pohl repeats in "The Heechee Saga" (see Heechee Rendezvous and Annals of the Heechee, this Category).