LEROUX, Gaston. The Mystery of the Yellow Room. [London: Amalgamated Press, n.d.]. 8o. Illustrated by Cyrus Cuneo. Original wrapper (lacks lower cover, light chipping and splitting to upper cover); red half morocco slipcase. Provenance: Richard Montgomery Gilchrist Potter (bookplate). FIRST ENGLISH EDITION published as Daily Mail Six Penny Novel. -- The Phantom of the Opera. New York: Bobbs-Merrill, [1911]. 8o. Illustrated by André Castaigne. Original cloth. -- Another copy. (Worn). -- The Mystery of the Yellow Room. -- The Phantom Clue. Later printings. (5)