After living for seven unforgettable weeks among the stockyard workers in Chicago, Upton Sinclair published his novel, The Jungle, in 1906, to "frighten the country by a picture of what its industrial masters were doing to their victims."

Among his revelations? That poisoned bread and dead rats were swept together into the meat-conveyor belt and came out in sausages, and that men who fell into open vats went out into the world as Anderson's Pure Leaf Lard.

[The novel served as a catalyst for a government investigation of conditions in the stockyards and for subsequent pure-food legislation.]