QUEEN, Ellery. The Siamese Twin Mystery. New York, 1933. Dust jacket. -- The Adventures of Ellery Queen. New York, 1934. (Lacking dust jacket.) Queen's Quorum 90. -- The Dragon's Teeth. New York, 1939. -- The New Adventures of Ellery Queen. New York, 1940. -- Adventure of the Last Man Club. Racine, [1940]. Thick 12o. "Better Little Book" edition. SIGNED. -- Ellery Queen's Mystery Magazine. [Concord], 1941. Volume One. Original pictorial wrappers. -- The Adventure of the Murdered Millionaire. Racine, 1942. Thick 12o. Flip 'em corner illustrations. "Better Little Book" edition. -- The Murderer is a Fox. Boston, 1945. -- Ten Days' Wonder. Boston, 1948. -- Cat of Many Tails. Boston, 1949. -- Double, Double. Boston, 1950. -- The Origin of Evil. Boston, 1951. -- Calendar of Crime. Boston, 1952. SIGNED. -- The Finishing Stroke. New York, 1958. -- And On the Eighth Day. New York, [1964]. -- Queens Full. New York, [1965]. -- Face to Face. [New York, 1967]. -- Q.E.D. Queen's Experiments in Detection. New York and Cleveland, [1968]. -- The XYZ Murders. Philadelphia, n.d. -- Death Spins the Platter. London, 1975. -- The Roman Hat Mystery. New York, 1979. Slipcase. Together 21 volumes, mostly FIRST EDITIONS, 8o, original cloth; DUST JACKETS except as noted, condition varies. (21)