- Upton Sinclair: Literature and Social Reform (Bremer Beitrage Zur Literatur-Und Ideologiegeschichte, Bd 9)
- Upton Sinclair, the Forgotten Socialist (Studies in American History) by Ivan Scott, 1997-08
- Mental Radio (Studies in Consciousness) by Upton Sinclair, 2001-02-01
- Upton Sinclair: A Study in Social Protest by Floyd Dell, 1970-06
- Critics on Upton Sinclair: Readings in Literary Criticism (Readings in Literary Criticism, 24)
- Upton Sinclair (Modern Literature Monographs) by Jon A. Yoder, 1975-05
- Upton Sinclair's the Jungle (Bloom's Modern Critical Interpretations)
- My Lifetime in Letters by U. Sinclair, 1960-01
- Southern Belle (Banner Books) by Mary Craig Sinclair, 1999-04-01
- The Jungle (Cliffs Notes) by Richard P. Wasowski, 2000-12-29
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