Marland P. Billings

Marland Pratt Billings (March 11, 1902 – October 9, 1996) was an American structural geologist who was considered one of the greatest authorities on North American geology. Billings was Professor of Geology at Harvard University for almost his entire career, having joined the faculty in 1930 and retired to ''emeritus'' status in 1972. He also taught for a brief time at Bryn Mawr College. Provided by Wikipedia