Carl Greenleaf retired in 1949 but remained a member of the board of directors until his death in 1959. He was succeeded by Paul Gazlay. In 1958, Lee Greenleaf succeeded Gazlay as company President. Conn briefly returned to manufacture of military instrumentation during the Korean War, while continuing production of musical instruments. Priorities changed under Gazlay, with the high quality wind instruments on which the company had built its reputation becoming an increasingly marginal interest. The 28M saxophone was discontinued after 1952 and cost-cutting measures were incorporated into the manufacturing process and designs of Conn's 6M, 10M, and 12M "Artist" series saxophones. Conn shifted their emphasis to the expanding market for school band instruments and to diversifying their instrument lines. In 1956, Conn sponsored a film to promote school bands entitled "Mr. B Natural". To diversify their product line, Conn acquired as subsidiaries the New Berlin Instrument Company (1954) of New Berlin, New York which produced clarinets, oboes and bassoons for Conn, the Artley Company (1959), a manufacturer of flutes and clarinets, the Janssen Piano Company (1964), and the Scherl & Roth Company (1964), a manufacturer of stringed instruments. Conn divested itself of Leedy and Ludwig in 1955, Carl Fischer retail in 1959, and New Berlin Instrument in 1961. By 1958, over half of Conn's sales revenue was from their electric organs. In 1959 Conn built a new organ factory in Madison, Indiana. The Janssen Piano assets were merged with Conn's organ division to form Conn Keyboards in 1964.