Vivian Perlis. “Ives Spirit Muses Brits,” review of The Unanswered Question Festival; January 19 to 21: London. Piano and Key-board (May/June) 180: 12-14.
Wohlfahrt, H. T. “Unbeantwortete Frage und viele Auskünfte,” review of The Unanswered Question Festival; January 19 to 21: London. Neue Musikzeitschrift 45 (April/May): 51.
Edward Dudley Hughes. “Dangerous to Know,” review of The Unanswered Question Festival; January 19 to 21: London. Musical Times 137/1838(April 1996): 28-29.
Stuck-Schloen, M. “Review of ‘Internationale Symposium’: "Köln, 24. bis 27. Februar 1988: International Symposium Charles Ives und die amerikanische Musik.” Die Musikforschung 41/4: 356-357.