Schonberg, Harold C. “Music: Evening of New Quotes the Old: Ives and Bartok Lead Parade of Moderns Young Brazilian does a Novelty on Tape.” The New York Times, April 2, 1969, 40.
Schonberg, Harold C. “Music: Minneapolis Opera Makes an Original Try: ‘Horspfal’ has Premiere -- about Indian’s Fall Composer’s Work Uses Charles Ives Devices.” The New York Times, February 17, 1969, 30.
Schonberg, Harold C. “Music: Ozawa and the Philadelphia: Young Leader Passes First Major Test Brahms, Prokofiev and Ives are Programed.” The New York Times, March 1, 1967, 48.