The Dr. Joseph Leidy House is a historic residence located at 1319 Locust Street between S. 13th and S. Juniper Streets in the Washington Square West neighborhood of Philadelphia, Pennsylvania. It was built in 1893-94 and was designed in the Georgian style by architect Wilson Eyre to be the home of Joseph Leidy, Jr., the nephew of Joseph Leidy (1823–1891), a noted American paleontologist with whom he is often confused. The house is next door to the Clarence B. Moore House, which was designed by Eyre in 1890. From 1925 to 1979, the Leidy House served as the clubhouse of the now-defunct Poor Richard Club, whose members worked in advertising, and with the Moore House next door, was part of the Charles Morris Price School of Advertising and Journalism. Currently, it is the headquarters of District 1199C, the National Union of Hospital and Health Care Employees. The house was added to the National Register of Historic Places in 1980. See also National Register of Historic Places listings in Center City, Philadelphia References External links Listing at Philadelphia Architects and Buildings Historic American Buildings Survey in Philadelphia Houses completed in 1893 Colonial Revival architecture in Pennsylvania Houses on the National Register of Historic Places in Philadelphia Houses in Philadelphia Washington Square West, Philadelphia