Dick's autobiographical essay "Notes Made Late At Night By A Weary SF Writer" appeared in the (1972) issue of Eternity SF. It was later published in The Shifting Realities of Philip K. Dick (1995).
Glen Cook
Cook's short story "Sunrise" appeared in the (1973) issue of Eternity SF. It takes place in Cook's Starfishers universe.
Roger Zelazny
Zelazny's short story "A Knight for Merytha" appeared in the (1974) and in the (1979) issues of Eternity SF. It was later published in Zelazny's short story collection Dilvish, the Damned (1982).
Orson Scott Card
Card's short story "The Tinker" appeared in the (1980) issue of Eternity SF. It was later published in Card's omnibus The Worthing Saga (1990).