An encyclopedia article from Wikipedia on Upton Sinclair's landmark novel, "The Jungle," describing its importance and giving an outline of the plot.

Biographical details on Upton Sinclair, noted American muckraker, social activist, essayist, and Pulitzer Prize winning author who wrote The Jungle (1906).

From a PBS American Experience series about Chicago, this biography of Philip Armour, who made the meat-packing business more efficient. Find out about his methods, but also about the horrible conditions of the meat-packers who worked in...