The Humanoids

Grosset & Dunlap issued a hardcover reprint in 1950 bearing its own imprint; the G&D imprint on the spine and title page is the reprint tell, and it is the copy most often mistaken for the S&S first precisely because the genuine first carries no edition statement to compare against. Later Avon and Lancer paperbacks carry their own imprints. No separate contemporaneous book-club issue is documented in the sources consulted.