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) inside its trunk near the very top. It is currently under private ownership; the property is owned by the Rouch family. It, however, remains accessible to the public. L. Day noticed the tree in 1931 and, with help from two others, made measurements of it in 1932. Wendell Flint, the author (with photographer Mike Law) of "To Find the Biggest Tree", measured it in 1977 as follows: 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