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 to be the center of attention for once in his life. Guiteau sent a letter in which he argued that Arthur should set him free because he had just increased Arthur's salary by making him president. At one point, Guiteau argued before Judge Cox that Garfield was killed not by the bullets but by medical malpractice ("The doctors killed Garfield, I just shot him"). Throughout the trial and up until his execution, Guiteau was housed at St. Elizabeths Hospital in the southeastern quadrant of Washington, D.C. While in prison and awaiting execution, Guiteau wrote a defense of the assassination he