PUBLICATION HISTORY

  • Amazing Stories, November 1963.

  • as: "Terzo Reich Parallelo" in Urania #359, 22nd November 1964. Milan: Arnoldo Mondadori Editore. Translated by Anna Pezzoli. [Italian]

  • as: "Ritorno Perduto" in: Gamma #27, March 1968. Milan: Edizioni dello Scorpione. Translated by Gian Luigi Gonano. [Italian]

  • The Most Thrilling Science Fiction Ever Told, Summer 1968.

  • Prime Number, July 1970.

  • as: "Zurück zur Erde" in: Primzhal [Prime Number]. June 1972. [German].

  • Galactic Dreams, April 1994.

  • 50 in 50, July 2001.