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 Scoville then became lead counsel for the defense. While Scoville's legal experience lay in land title examination, he had married Guiteau's sister and was thus obliged to defend him in court when no one else would. Wayne MacVeagh, the U.S. Attorney General, served as the chief prosecutor. MacVeagh named five lawyers to the prosecution team: George Corkhill, Walter Davidge, retired judge John K. Porter, Elihu Root, and E.B. Smith. Guiteau's trial was one of the first high-profile cases in the United States where a defense based on a claim of temporary insanity was considered. Guiteau vehemently insisted that while he