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The Tower Treasure - Dixon, Franklin W - 1931. 
Grosset & Dunlap, 1931 A beautiful 1931 printing in a stunning, fine dust jacket. Book is 1931A-5 and dust jacket, listing to Great Airport Mystery on the front flap, is 1932A-6.. 5th or later Edition. Hardcover. Fine/Fine.
[Bookseller: Bookbid Rare Books]