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.
Edward Charles Spitzka Hospital. He was a professor of nervous and mental diseases and of medical jurisprudence at the New York Post-Graduate Medical College from 1882 to 1887. In 1890, Spitzka served as President of the American Neurological Society. In 1883/1884, he served as President of the New York Neurological Society. Spitzka was the attending physician at the execution of William Kemmler in New York's Auburn Prison on August 6, 1890, the first execution using the new electric chair. In 1881, Spitzka was an expert witness at the trial of Charles J. Guiteau, who was accused of the assassination of United States President