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Byrne, Richard Jr. "Revolution 9". Baltimore City Paper, 29 January 1993.
DeBenedetti, Charles with Charles Chatfield. An American Ordeal: The Antiwar Movement of the Vietnam Era. Syracuse, NY: Syracuse University Press, 1990.
Polnar, Murray Polnar and Jim O'Grady. Disarmed and Dangerous: The Radical Lives and Time of Daniel and Philip Berrigan. New York : Basic Books, 1997.