Marland P. Billings
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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.
In the 1950s, Billings studied the geology exposed by some of the bedrock tunnels being constructed in the Boston area by the Metropolitan District Commission for water supply and drainage disposal. He also investigated the geology of many parts of the world, including Iceland, Japan, and Australia.
Marland was married to Katharine Fowler-Billings an accomplished naturalist and geologist.
Marland Billings died Wednesday, October 9, 1996, in Peterborough, New Hampshire. He was 94.
 Awards and honors
- Fellow of the American Academy of Arts and Sciences (1938)
- Penrose Medal
- Member of the United States National Academy of Sciences
- Geological Society of America, President 1959
- American Geophysical Union
- Mineralogical Society of America
- Seismological Society of America
A partial list of books:
- Origin of the Appalachian Highlands (1932)
- Geology of the Littleton and Moosilauke quadrangles (1935)
- Geology of the Franconia quadrangle (1935)
- Structural Geology (1942) ISBN 0-87692-059-8
- The Geology of the Mt. Washington Quadrangle (1946)
- A Geological Map of New Hampshire (1955)
- Geology of New Hampshire (1956)
- Chemical analyses of rocks and rock-minerals from New Hampshire (1965)
- Geology of the Gorham Quadrangle: New Hampshire-Maine (1965)
- Geology of the Malden tunnel, Massachusetts (1966)
- Geology of the North Metropolitan Relief Tunnel, great Boston, Massachusetts (1975)
- Bedrock geology (The Geology of New Hampshire) (1980)
- "Book of Members, 1780–2010: Chapter B". American Academy of Arts and Sciences. Retrieved July 20, 2011.
- Marland P. Billings 1902-1996, A Remembrance by Brian K. Fowler, Windswept, The Quarterly Bulletin of the Mount Washington Observatory, Vol. 38. No. 1, Spring 1997, pp. 53-54.
- Mount Washington Observatory
- Mineralogical Museum at Harvard University