Richard E. Byrd, American admiral and explorer (born 1888)

Richard Evelyn Byrd Jr. was an American naval officer, and pioneering aviator, polar explorer, and organizer of polar logistics. Aircraft flights in which he served as a navigator and expedition leader crossed the Atlantic Ocean, a segment of the Arctic Ocean, and a segment of the Antarctic Plateau. He is also known for discovering Mount Sidley, the largest dormant volcano in Antarctica.

March 11 is the 70th day of the year in the Gregorian calendar; 295 days remain until the end of the year.