Autorizaciones

• Ray Bradbury • El Flautista • The Piper • © 1940 by Ray Bradbury.

• Alfred E. van Vogt • Proceso • Process • © 1950 by Fantasy House, Inc.

• Arthur C. Clarke • El Centinela • The Sentinel • © 1951 by Avon Periodicals, Inc.

• Robert Sheckley • La Séptima Víctima • The Seventh Victim • © 1963 by Galaxy Publishing Co.

• Robert Abernathy • Combate Singular • Single Combat • © 1956 by Fantasy House, Inc.

• Charles L. Fontenay • La Seda y la Canción • The Silk and the Song • © 1956 by Fantasy House, Inc.

• Jacques Sternberg • El Mundo Ha Cambiado • Le Monde a bien Changé • © 1957 by Editions Denoël.

• Fausto Cunha • Último Vuelo a Marte • Ultimo Vôo para Marte • © 1961 by GRD.

• Belcampo • Las Cosas al Poder • De Dingen de Baas • © 1963 by Kosmos.

• James G. Ballard • El Hombre Iluminado • The Iluminated Man • © 1964 by Mercury Press.

• David Masson • El Reposo del Viajero • The Traveller’s Rest • © 1965 by New Worlds.

• Bob Shaw • Luz de Otros Días Perdidos • Light of Other Days • © 1966 by Condé Nast Publications, Inc.

• Thomas Disch • La Jaula de la Ardilla • The Squirrel Cage • © 1966 by New Worlds.

• Harlan Ellison • El Merodeador en la Ciudad al Borde del Mundo • The Prowler in the City at the Edge of the World • © 1967 by Harlan Ellison.

• John T. Sladek • Informe sobre las Migraciones del Material Educativo • A Report on the Migrations of Educational Materials • © 1968 by Mercury Press, Inc.

• George Alec Effinger • Todas las Guerras Definitivas a la Vez • All the Last Wars at Once • © 1971 by Terry Carr.

• Raphael A. Lafferty • Chirriantes Goznes del Mundo • Groaning Hinges of the World • © 1971 by R. A. Lafferty.

• Robert Silverberg • En las Fauces de la Entropía • In Entropy’s Jaws • © 1971 by Lancer Books, Inc.

• Christopher Priest • La Cabeza y la Mano • The Head and the Hand • © 1971 by Christopher Priest.

• Ursula K. Le Guin • Los que se van de Omelas • The Ones who walk away from Omelas • © 1973 by Robert Silverberg.