New York Times: Gerald W. Jonson, "Sound the Alarm," September 24, 1967", accessed January 10, 2011; Spivak's account of the 1930s "conspiracy" in his autobiography is detailed, but markedly different in both tone and content from his articles decades earlier in New Masses.
David Riesman, "Democracy and Defamation: Fair Game and Fair Comment I," in Columbia Law Review, vol. 42 (1942), 1091n; New York Times: "Spivak Returned to Jail," April 2, 1940, accessed December 12, 2010