The Plague Court Murders

No contemporaneous book-club issue of the 1934 Morrow printing is documented in the sources consulted. Because Morrow always noted later printings before 1973, any reprint or printing notice on the copyright page rules out the first. Later cheap reprints and paperbacks (Avon and others) carry their own imprint on the spine and title page and are easily separated; one Avon reprint is reported to add the subtitle "A Chief Inspector Masters Mystery", which is a reprint feature and was NOT confirmed on the Morrow first — do not use that subtitle as a first-edition point.