The Post Office and Courthouse (now called the Joseph F. Weis, Jr. U.S. Courthouse) is Pittsburgh’s grandest monument of the style old Pa Pitt calls “American Fascist.” The post office was on the Seventh Avenue side; it has moved to Liberty Center, but the inscriptions are still here. The building was put up under Secretary of the Treasury Andrew W. Mellon, of whom it was often said that three presidents served under him. The architects were Trowbridge & Livingston, who also worked on some of Mellon’s private projects, like the Gulf Building across the street.