Novelist Upton Sinclair spent time working undercover at a Chicago meatpacking plant while writing his novel, The Jungle (1906). Sinclair’s novel inspired readers to demand that the government establish stricter food safety regulations.
Upton Sinclair, portrait bust, by Studio at 56 Fifth Ave., N.Y., date unknown. Publishd by Bain News Service. Prints and Photographs Division, Library of Congress.