Abstract Correspondence, playbills, programs, clippings, photographs, notes, grant proposals and other research material collected for the book, Mark the Music: The Life and Work of Marc Blitzstein (St. Martin's Press, 1989), by Eric A. Gordon. An American composer and gay man, Marc Blitzstein is perhaps most well-known for his 1937 musical, The Cradle Will Rock. The collection includes materials documenting Blitzstein's musical...