Cordwainer Smith
The NESFA Press volume The Rediscovery of Man reprints all 30-odd of Smith's science fiction stories, including the Casher O'Neill ones later fixed up as Quest of the Three Worlds (1966). The identically titled Gollancz volume is a reprint of the 1975 Del Rey volume The Best of Cordwainer Smith, which comprises about half of the complete short fiction. NESFA has also done an edition of Smith's only SF novel, Norstrilia, originally published in two halves as The Planet Buyer (1964) and The Underpeople (1968) and only published in one volume in 1975. And the Baen volume We the Underpeople contains five long stories plus Norstrilia. The NESFA Rediscovery of Man is suited best for Smith's fan as a proofread hardback, and annotated with helpful background information.