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Upton Sinclair - Wikipedia
Upton Sinclair | Biography, Books, The Jungle ...
Upton Sinclair - The Jungle, Books & Quotes - Biography
The Jungle - Wikipedia
How Upton Sinclair’s 'The Jungle' Led to US Food Safety ...
Upton Sinclair, Whose Muckraking Changed the Meat Industry
Upton Sinclair Biography, Works, and Quotes | SparkNotes
The Jungle | Summary, Characters, & Facts | Britannica
Upton Sinclair | Holocaust Encyclopedia
Upton Sinclair summary | Britannica