Riley, Robert. “Singers on Stage at Wilshire Ebell.” Los Angeles Times, April 17, 1967, D30.

Willis, Thomas. “Records: Virtuosity in Music’s Service: Horowitz, Lipatti, Masselos.” Chicago Tribune, April 16, 1967, E11.

Willis, Thomas. “Records.” Chicago Tribune, July 16, 1967, E9.

Noble, David. “Ives Work Introduced by Pianist Mandel.” The Boston Globe, March 27, 1968, 40.

Strongin, Theodore. “Lots of Ives in One Box.” The New York Times, April 28, 1968, D30.

Willis, Thomas. “A Quilt Well Stitched.” Chicago Tribune, June 17, 1968, B12.

Kreigsman, Alan M. “Record Player: A.U.’s Mandel Adds to Ivesiana.” The Washington Post and Times Herald, April 14, 1968, E8.

“Festival Ends at Mitchell.” The Hartford Courant, July 14, 1968, 10B3.

Kriegsman, Alan M. “Ives Sonata Given Fresh Treatment.” The Washington Post and Times Herald, August 4, 1967, B6.

Barnes, C. “Charles Ives’ Salute to the Fourth of July: Violently Original.” The Christian Science Monitor, 1967, 10.