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William C. Gorgas, Surgeon General, U.S. Army, 1914. Head of the Panama Canal Zone Sanitation Commission, his work on limiting the transmission of yellow fever and malaria by controlling the mosquitoes that carry these diseases saved thousands of lives, and contributed to the success of the Canal's construction. William Crawford Gorgas, Surgeon General, U.S.A., 1914. Creator: Harris & Ewing. (KEYSTONE/HERITAGE IMAGES/HERITAGE ART)