National Gallery of Art two months after excavation had begun. At the time of its inception it was the largest marble structure in the world. The museum stands on the former site of the Baltimore and Potomac Railroad station, where in 1881 a disgruntled office seeker, Charles Guiteau, shot President James Garfield (see James A. Garfield assassination). As anticipated by Mellon, the creation of the National Gallery encouraged the donation of other substantial art collections by a number of private donors. Founding benefactors included such individuals as Paul Mellon, Samuel H. Kress, Rush H. Kress, Ailsa Mellon Bruce, Chester Dale, Joseph Widener, Lessing J.
Charles J. Guiteau his claim for a consulship. In the spring, he was still in Washington, and on May 14, 1881, he once more encountered Secretary of State James G. Blaine in person and inquired about a consular appointment; an exasperated Blaine finally snapped "Never speak to me again on the Paris consulship as long as you live!" Guiteau considered himself a loyal Republican and a Stalwart, and his narcissistic personality convinced him that his work for the party was critical to Garfield’s election to the presidency. Later convinced that Garfield was going to destroy the Republican Party by scrapping the patronage system,