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This file includes the draft and published articles, books, and interviews of Henry Hanson.

This file consists of a few pieces of Henry Hanson's correspondence. It includes his resignation letter from the Florida Health Department and letters from William Gorgas and Hideo Noguchi.

This file contains two letters related to the posthumous publication of Henry Hanson's book, "The Pied Piper of Peru: Dr. Henry Hanson's Fight Against "Yellow Jack" and the Bubonic Plague in South America, 1919-1922."

The diary begins October 4, 1925, the day after Hanson boarded the S.S. Majestic in New York City to cross the Atlantic as the first leg in his journey to Nigeria to be part of the West Africa Yellow Fever Commission. Hanson summarized his work in the Peruvian campaigns from July 1919 to May 1922 as well as mentioned the time he spent in Central America, but the bulk of the diary describes his work in southwestern Nigeria which included 5,000 house visits to inspect for containers with water and breeding mosquitoes in 22 months. Hanson stated the language barrier and climate were major difficulties. He left Nigeria on May 17, 1927 and the diary ends on July 27, 1927 when he is in England.