Chávez, Carlos, 1899-1978

Correspondence, music, and photographs by and about the American music librarian, critic, music administrator, recording executive, and program annotator Leonard Burkat (1919-1992)

Music, correspondence and other writings, photographs, and additional materials by and about the American composer and insurance executive Charles Ives (1874-1954)

Music, correspondence and other papers, photographs, and additional materials by and about the American composer and critic Virgil Thomson (1896-1989)