Official website: http://solitudehouse.org/
Site Dates: 1784
Site Owner(s): John Penn
Site Designer(s): Robert Adam
John Nancarrow, Plan of the Seat of John Penn, jun'r: Esqr: in Blockley Township and County of Philadelphia (c. 1784). Historical Society of Pennsylvania, Philadelphia, PA.
William Russell Birch, Solitude in Pennsylva. belonging to Mr. Penn (1808).