Jonathan Eisen, The Age of Rock Sounds of the American Cultural Revolution —A Reader (New York: Random House, 1969);

Orrin Keepnews and Bill Grauer, Jr., A Pictorial History of Jazz, second edition (New York: Crown, 1966);

George Martin, The Opera Companion (New York: Dodd, 1961);

Wilfrid Mellers, Music in a New Found Land (New York: Knopf, 1965);

Henry Pleasants, Serious Music—And All That Jazz! (New York: Simon & Schuster, 1969);

Harold C. Schoenberg, The Great Conductors (New York: Simon & Schuster, 1967);

Schoenberg, The Great Pianists (New York: Simon & Schuster, 1963);

Peter Yates, Twentieth Century Music: Its Evolution from the End of the Harmonic Era into the Present Era of Sound (New York: Pantheon, 1967);

Down Beat, periodical;

Opera News, periodical;

Rolling Stone, periodical.