Library of Congress
Authorities & Vocabularies
found: Callas, 1974.
found: The Philadelphia Orchestra, 1999: CIP t.p. (John Ardoin) data sheet (b. Jan. 8, 1935)
found: New York Times, Mar. 20, 2001 (John Ardoin, 66, music critic and author; d. Mar. 18, 2001, San José, Costa Rica; b. 1935, Alexandria, La.)