Collections : [Yale University -Irving S. Gilmore Music Library]

Music, correspondence and other papers, art works, photographs, and additional materials by and about the American composer Carl Ruggles (1876-1971)

Music, correspondence and other papers, photographs, and additional materials by and about the American composer Quincy Porter (1897-1966)

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