In order to include in Independence National Historical Park the site of the Graff House where Thomas Jefferson wrote the Declaration of Independence, the Secretary of the Interior is authorized to acquire by purchase, donation, or with donated funds all or any interests in the land and improvements thereon located at the southwest corner of Market and South Seventh Streets, in the city of Philadelphia, State of Pennsylvania, and more particularly described as follows:

Beginning at a point located at the intersection of the southerly line of Market Street with the westerly line of South Seventh Street, thence southerly along the west side of South Seventh Street 124 feet, thence westerly 50 feet, thence northerly 124 feet, thence easterly 50 feet to the point of beginning.