Fiction Index Anderson, Poul, --Time Heals, 1949. (Astounding, October, 1949.)
Bester, Alfred, --The Men Who Murdered Mohammed, 1958. (F & SF, October, 1958; The Dark Side of the Earth, 1964.)
del Rey, Lester, --... And It Comes Out Here, 1950. (Galaxy, February, 1951.)
Kornbluth, C. M., --Dominoes, 1953. (Star Science Fiction, 1953; New Worlds, #28, October, 1954.)
Masson, David I., --Traveler's Rest, 1965. (New Worlds, #154, September, 1965.)
Miller, P. Schuyler, --Sands of Time, 1937. (novelette) (Astounding, April, 1937.)
Moorcock, Michael, --Flux, 1963. (New Worlds, July, 1963.)
Niven, Larry, --Wrong-Way Street, 1965. (Galaxy, April, 1965.)
Shore, Wilma, --A Bulletin from the Trustees of the Institute for Advanced Research at Marmouth, Mass., 1964. (F & SF, August, 1964.)
Silverberg, Robert, --Absolutely Inflexible, 1956. (Fantastic Universe, July, 1956; New Worlds, #72, June, 1958.)
Tenn, William, (Philip Klass) --Brooklyn Project, 1948. (Planet Stories, Fall, 1948.)
Wells, H. G., --The Time Machine, 1895. (excerpt)