SparkNotes
Spark Notes: The Jungle by Upton Sinclair
This site is a study guide for "The Jungle." It includes chapter summaries, context, characters, study questions, and essay topics.
Museum of the City of San Francisco
Upton Sinclair: End Poverty in California: The Epic Movement
Upton Sinclair outlines how he would end poverty in his failed campaign for the governorship of California in a 1934 article for Literary Digest.