Thomas Brennan Nolan

Thomas Brennan Nolan (May 21, 1901 – August 2, 1992) was an American geologist who was director of the United States Geological Survey (USGS) from 1956 to 1965. The mineral nolanite is named in his honor and he was an elected member of the American Academy of Arts and Sciences, the United States National Academy of Sciences, and the American Philosophical Society. He was generally known as Tom Nolan. Provided by Wikipedia