CONTENIDOÉrase una vez un gigante... (Once there was a Giant © 1968) Keith Laumer.Sacrificio humanoide (Humanoid Sacrifice © 1964) J. T. McIntosh.Monedas (Coins © 1968) Leo P. Kelley.Butterfly de quince años (Butterfly was 15 © 1968) Gilbert Thomas.El nuevo enciclopedista (The New Enciclopaedist © 1964) Stephen Becker.El libro de elías (The Book of Elijah © 1963) Edward Wellen.Sucedió en el sótano (Incident in the Ind © 1964) Harry Harrison.¡Clama esperanza, clama furia! (Cry Hope, Cry Fury! © 1967) James G. Ballard.El hombre mecánico (Gadget Man © 1968) Ron Goulart.El maestro de Altamira (The Master of Altamira © 1964) Stephen Barr.