“Bienvenidos al centenario del fin del mundo” (by Daniel Mares & DS) • short fiction

“The First Day of Eternity” • short fiction • Analog

Gabriel • novel • 1963

“La Máquina de Plymblikot” (by Daniel Mares & DS) • short fiction

“Round and Round and Round Again ” • The Best from the Rest of the World, 1976

“The Song of Infinity ” • New Writings in SF. 14, 1969