Reference

The presidents of the Geological Society of America from 1926 to 1950 were as follows:

• 1926: Andrew C. Lawson
• 1927: Arthur Keith
• 1928: Bailey Willis
• 1929: Heinrich Ries
• 1930: R. A. F. Penrose Jr.
• 1931: Alfred Church Lane
• 1932: Carl O. Dunbar
• 1933: Bailey Willis (second term)
• 1934: Thomas Chrowder Chamberlin
• 1935: William H. Hobbs
• 1936: Charles Palache
• 1937: Rollin T. Chamberlin
• 1938: William Berkey
• 1939: David White
• 1940: Thomas Wayland Vaughan
• 1941: Bailey Willis (third term)
• 1942: Kirk Bryan
• 1943: William C. Krumbein
• 1944: Francis P. Shepard
• 1945: Lon Hancock
• 1946: Maurice Ewing
• 1947: William H. Bradley
• 1948: Robert R. Rieke
• 1949: Hershal Ferguson
• 1950: A.F. Childers

This information was gathered from the Wikipedia page titled "Template: Presidents of the Geological Society of America" and the Geological Society of America's official website. Here is an image of the Geological Society of America Building in Boulder, Colorado, which may be of interest: .