Cimarron

The most common reprint trap is the Grosset & Dunlap photoplay edition issued for the 1931 RKO film (Richard Dix, Irene Dunne): it carries the 1930 copyright date forward on the copyright page, so the year alone reads as a first — the tells are the Grosset & Dunlap imprint on the spine, title page and jacket, the absence of the "First Edition" statement, the film-still frontispiece/insert, and the jacket's movie artwork with a "Photoplay Edition" or cast credit. Later Doubleday, Doran printings of the sizeable 1930 trade run are identified simply by the missing "First Edition" line. No Book-of-the-Month or other book-club issue of the 1930 first appearance was documented in the sources consulted; Cimarron was the best-selling novel of 1930 in the trade edition itself, so blind-stamp/dot book-club tells are not the usual failure mode here — the Grosset & Dunlap reprint is.