Alfred Heinemann (1908-1995) was a German composer, concert pianist, and lecturer. The collection is comprised of Heinemann’s compositions from 1920 to 1964 and is in various stages of completion. The collection also includes notes on the compositions, lecture notes, programs from performances, correspondence, an audio recording of a performance of Heinemann’s String Quartet, and personal papers.

Leo Kraft (1922 – 2014) was an American composer, educator, and author born in Brooklyn, New York. He taught music theory and composition at the Queens College School of Music, to later become the Aaron Copland School of Music, from 1948 to 1989. He was a key member in developing the music theory curriculum. Kraft composed many works of chamber music, and he also contributed orchestral, piano, vocal, and electronic music to his oeuvre.