The Grapes of Wrath

Book-club reprints carry the 1939 copyright date but lack the 'First published in April 1939' line and lack the jacket's 'First Edition' statement; they are typically thinner, show a blind-stamped dimple to the rear board, and come in an unpriced or price-clipped jacket. Absence of the single 'April 1939' line on the copyright page = not a first.