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
Hart (tree) 1880. Redwood Mountain Grove is the largest grove of Giant sequoias in the world, and is the location of the tallest one of the species on earth at (unnamed). Hart (tree) The Hart tree is a named Giant sequoia ("Sequoiadendron giganteum") tree within the Redwood Mountain Grove, in the Sierra Nevada and Fresno County, California. The Redwood Mountain Grove is protected within Kings Canyon National Park and the Giant Sequoia National Monument. It was once claimed to be the fourth largest Giant sequoia in the world, but is now considered the 24th largest. Its has a volume of around .