Twenty first EQMM editions. The American Mercury Inc., New York June 1947. Condition: Very good. Light toning to pages and light wear (see photos). Every magazine has a transparent plastic envelope for protection. These are earlier editions in very good condition of the famous Mystery Magazine which set the standard for the modern crime and mystery short story. The Cover illustrations are by famous George Salter who revolutionized cover design for books. Famous authors like Ernest Hemingway and Agatha Christie published their stories in Ellery Queen's Mystery Magazine which was launched in 1941. Ellery Queen was the pseudonym of the team of Frederic Dannay and Manfred B. Lee, who had been writing under the name since 1929. EQMM was created to provide a market for mystery fiction above the common run of pulp crime magazines of the day. From the creation of EQMM, Dannay was determined to make the magazine "a quality publication devoted exclusively to the printing of the best detective-crime short-story literature," making quality the sole criterion for inclusion in the magazine, and this principle was inherited by succeeded editors till today.