- Francis Shor: Power, Gender, and Ideological Discourse in 'The Iron Heel' . In: Leonard Cassuto, Jeanne Campbell Reesman: Rereading Jack London. Stanford University Press 1998, ISBN 0-8047-3516-6, pp. 75–91 (online copy, p. 75, at Google Books)
- Tony Barley: Prediction, Programme and Fantasy in Jack London's 'The Iron Heel' . In David Seed: Anticipations: Essays on Early Science Fiction and its Precursors. Syracuse University Press 1995, ISBN 0-8156-2632-0, pp. 153–171 (online copy, p. 153, at Google Books)
- John Whalen-Bridge: Political Fiction and the American Self. University of Illinois Press 1998, ISBN 0-252-06688-X, pp. 73–100 (online copy, p. 73, at Google Books)
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