Boole (tree) the largest in Converse Basin Grove, was named around 1895 by A.H. Sweeny, a Fresno doctor, after Franklin A. Boole, a supervisor of the logging operation who spared the tree's life due to its great size. Before 1931, it was thought by many to be the largest tree in the world (although the General Grant Tree was more popularly known as the largest tree in the world at that time), but it is now known as the sixth largest tree, after five other giant sequoias: the General Sherman tree, the General Grant, the President tree, the Lincoln tree, and the
Redwood National and State Parks 2004. For many years, one specimen simply named Tall Tree in Prairie Creek Redwoods State Park and within the RNSP was measured at , but the top of the tree was reported to have died in the 1990s. One tree that fell in 1991 was reported to be . Only the giant sequoia has more mass. The largest redwood by volume is the 42,500 cubic foot (1,205 m³) Lost Monarch, located in Jedediah Smith Redwoods State Park. Mature Coast redwoods live an average of 500–700 years and a few are documented to be 2,000 years old, making them some of