Learn more about Sinclair in this article. Sinclair's work was well known and popular in the first half of the 20th century, and he won the Pulitzer Prize for Fiction in 1943..

Impact of Sinclair's 'The Jungle' on Food Safety NPR's Melissa Block speaks with Morris Dickstein of the City University of New York about Upton Sinclair's book The … Some critics might say that his language was too graphic, or that he was perhaps going overboard with his melodrama, but there is no doubt that it had broad implications for social change.

Upton Sinclair was a famous novelist and social crusader from California, who pioneered the kind of journalism known as "muckraking." Upton Sinclair, prolific American novelist and polemicist for socialism, health, temperance, free speech, and worker rights, among other causes. Upton Beall Sinclair Jr. (September 20, 1878 – November 25, 1968) was an American writer who wrote nearly 100 books and other works in several genres. Upton Sinclair’s The Jungle was a wake up call to many Americans.

His classic muckraking novel The Jungle (1906) is a landmark among naturalistic proletarian work. His best-known novel was "The Jungle" which was an expose of the appalling and unsanitary conditions in the meat-packing industry.