English: "The House intended for the President of the United States, in Ninth Street Philadelphia." W. Birch & Son, The City of Philadelphia, in the State of Pennsylvania North America, as it appeared in the Year 1800 (Published by W. Birch, Springland Cut, near Neshamany Bridge on the Bristol Road; Pennsylvania. Decr 31st 1800), Plate 13.
This President's House on Ninth Street was built in the 1790s by the State of Pennsylvania to be the Executive Mansion of the United States, neither President George Washington nor President John Adams would occupy it. Following the national capital's move from Philadelphia to the District of Columbia in 1800, the building housed the University of Pennsylvania. It was demolished in the 1820s.