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 convinced that his actions were divinely inspired, and that his destiny was to "preach a new Gospel" like Paul the Apostle. Guiteau then obtained a law license in Chicago; however, he was not successful as a lawyer. He argued only one case in court, the bulk of his business being in bill collecting. His former wife later detailed his dishonest dealings, describing how he would keep disproportionate amounts from his collections and rarely give the money to his clients. He next turned to theology. He published a book on the subject called "The Truth" which was almost entirely plagiarized from