Ice Station Zebra

UK book-club reprints of MacLean carry the club's imprint (Companion Book Club, The Reprint Society/World Books) in place of Collins on the spine, title page and jacket, and their jackets are unpriced — the substituted imprint is the reliable tell, not the binding. American Doubleday book-club printings lack the "First Edition" statement, carry a blind-stamped device (a small impressed square, circle or maple leaf) on the lower rear board, are bulked on lighter paper, and have unpriced jackets.