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    Franklin W. Dixon. The Hardy Boys #19: The Disappearing Floor. New York: Grosset & Dunlap, 1940.

    First edition. Illustrated by Paul Laune. Duodecimo. 218 pages.

    Publisher's tan cloth with brown titles on the spine and front board. Pictorial endpapers. Former owner's name in ink on the front free endpaper. Minor shelf wear. Contents slightly toned as usual. Rare color pictorial dust jacket shows only minor shelf wear, with the white portions of the back panel exhibiting minor soiling. A fine copy in a fine jacket.

    The inside front flap of the dust jacket lists 18 previous titles, the last being The Twisted Claw. The catalog of titles on the copyright page lists The Disappearing Floor as the last published title. The inside back flap of the dust jacket has an advertisement for James Cody Ferris's western stories for boys. From the Robert and Diane Yaspan Collection.

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