William M. Mann

William Montana Mann[1] (1886–1960) was an American entomologist and the fifth director of the National Zoo in Washington, D.C. from 1925 until 1956.

[2] 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.

[1] Mann is also honored in the specific name of the fish Gambusia manni.