John Koopman's Unsung Songs features an analysis of the pieces, comparing them somewhat with Copland's treatment of the poet's work and also evaluating them on their own.

New York Public Library listing of recordings of his own and others' works collected by the composer. Includes summary, administrative information, biography, scope and contents, organization and arrangement, and collection listing.

Biographical data, noted works and writings, recommended CDs, books, and sheet music, general bibliography, and links from Dr. Estrella's Incredibly Abridged Dictionary of Composers.

Listing at the Classical Composers Database summarizes life and major works. Also notes certain famous students.

Biography from Presser with photographs, family, education, musical abilities, and compositional styles. Includes list of works, comments on major compositions, selected discography, and review excerpts.