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
Stagg (tree) Stagg (tree) The Stagg Tree (formerly known as the Day Tree) is a giant sequoia in Alder Creek Grove in California's Sierra Nevada mountains. It is the fifth largest tree in the world and is believed to be over 3,000 years old. The tree was renamed in 1960 after Amos Alonzo Stagg (1862-1965), a pioneering football coach at the University of Chicago who spent much of the last several decades of his life coaching in Stockton in the nearby San Joaquin Valley. In 1993 a group of climbers scaled the full height of the tree and discovered a hollow room