The "Seven Sisters Oak" is located in Lewisburg, Louisiana and was named president of the Society in 1968 when its predecessor, "The Locke Breaux Oak" of Taft, Louisiana, died from air and groundwater pollution.
"Seven Sisters Oak" has a girth, or waistline, of 38+ feet. Seated at its base is the current chairman of the Society and the only human permitted in the Society, whose job it is to register trees and monitor them. As of June, 2005, there are 5124 oaks registered in 14 states in the USA. The Society was founded in 1934 in Lafayette, Louisiana by the President of Southwestern University.