In the fourth volume of this comprehensive study, Jefferson acquires the vast territory of Louisiana for the United States, challenges the growing power of the federal judiciary, continues to press his opposition to the Hamiltonian doctrine of an overriding central government, assumes the unchallenged leadership of his party, and is universally acknowledged as the preeminent American patron of science and general learning.
At the time of his death late in 1986, Dumas Malone was acknowledged as the greatest scholar ever to study and write a biography of Thomas Jefferson. Born in Mississippi, educated at Emory and Yale, and a Marine Corps veteran of World War I, Malone was editor-in-chief of the scholarly"Dictionary of American Biography" and wrote a 15,000-word life of Jefferson as part of his editorial duties. From that first scholarly interest, Malone went on to write (between 1948 and 1981) a six-volume work, "Jefferson and His Time", that will long stand as the definitive biography of our third president.