Demons by Daylight

The census claim is confirmed as to precedence — Arkham House, Sauk City, 1973 is the true first and the only hardcover of the original text — but its wording that this is the "only edition" is wrong. The collection was reprinted twice in paperback, and no earlier or simultaneous UK edition is documented in the sources consulted. The important "first thus" trap is the Jove/HBJ paperback of May 1979, which is not the same book: it drops "The Second Staircase" and adds "Reply Guaranteed" and "The Telephones." The Carroll & Graf paperback of 1990 restores the Arkham House contents but remains a reprint.