1589. LEONARD BERNSTEIN (1918-1992) American composer and conductor whose works frequently reflected American themes. A.M.Q.S., "Leonard Bernstein", 1p. oblong 8vo, "(Mass)", Jan. 19, 1979, on lined paper. Two bars of music and verse reading, "Sing God a Simple Song". Sold with original transmittal letter from Robert L. Lind, both pieces in near fine condition. $400-600