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The Dracula Tape (Warner June 1975) / (Ace Jan. 1984
"Deathwomb" Poul Anderson (nv) Analog Nov. 1981) (short fiction collection; only 2 original/uncollected stories); (available online) as a Baen Free Sample from Berserker Death omnibus
Berserker Base (Tor March 1985); Mosaic Berserker novel with several guest authors contributing original stories; Saberhagen wrote the overarching story in segments between them using the Niven story as the novel's fulcrum point:
"What Makes Us Human" Stephen R.
Saberhagen also wrote a series of vampire novels in which the vampires (including the famous Dracula) are the protagonists and a series of post-apocalyptic mytho-magical novels beginning with his popular Empire of the East and continuing through a long series of Swords and Lost Swords novels. F.