William M. Mann

William Montana Mann (1886–1960) was an American entomologist and the fifth director of the National Zoo in Washington, D.C. from 1925 until 1956. In 1921, he traveled on the Mulford Expedition to the Amazon. In 1926, he married Lucile Quarry Mann. The two worked together as a team to improve and promote the zoo, including going on expeditions around the world to collect live specimens for the zoo's collection. He graduated from Washington State University and Harvard University.