The Judas Window

Both the Morrow (New York) and Heinemann (London) 1938 editions are collected. The census claims US precedence and the evidence leans that way without being conclusive: the Morrow sheets were printed in December 1937, and the Morrow's Library of Congress registration number (38002491) is very low for 1938, indicating early-in-year US deposit; no source consulted supplies a month for the Heinemann. Issued under the Carter Dickson pseudonym (John Dickson Carr) in both markets, so this is not a pseudonym-precedence split. Reported but uncorroborated, and therefore not treated as a point here: the British and American texts are said to differ in many minor respects and in the name of one major character — that claim rests on a single uncited source and the name itself is nowhere documented.