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.

“American Music Charles Ives: Great Talent Ahead of His Time.” South China Morning Post, November 28, 1969, 72.

“Mrs. Charles Ives, Composer’s Widow.” The New York Times, April 5, 1969, 27.

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.

Strongin, Theodore. “Ives Piano Device Sets Concert Tone: New Works are Played on Re-Tuned Instruments.” The New York Times, April 21, 1967, 48.

Willis, Thomas. “Handel and Ives Midst Yuletide Setting.” Chicago Tribune, April 24, 1967, B17.

Hart, William S. “Music for Young People.” The Sun, March 2, 1967, A14.

Porter, Cecelia H. “Mandel Plays at National Gallery.” The Washington Post and Times Herald, May 2, 1967, D11.

Kriegsman, Alan M. “Gregg Smith Singers Perform Ives’ Music with Genius.” The Washington Post and Times Herald, October 26, 1967, D23.

“Conductor Visits City for 2-Week Engagement.” Chicago Tribune, February 5, 1967, H9.