The Report on Unidentified Flying Objects

Book-club editions and later printings reprint the text but are not the first edition and are far less collectible. The Literary Guild, Mystery Guild, and Doubleday Book Club run through this house; their club editions carry a five-digit code block on the jacket and a rear-board blind stamp — not the same as the trade first. Use the points above to be certain — see book-club edition vs. first edition.