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- 1936 . Publishers’ Weekly , CXXIX May 23 2011–14
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- Parrington , Vernon Louis . 1930 . “Our Own Diogenes” . In Main Currents in American Thought Vol. III , New York
- 1938 . “That Was a Good Lecture” . Newsweek , XI March 28 : 30
- 1938 . “Lecturer's Message” . Newsweek , XI February 14 : 32
Quarterly Journal of Speech
Volume 51, 1965 - Issue 3