Scull, Nicholas, 1686?-1761?, Matthew Clarkson, and Mary Biddle. To the mayor, recorder, aldermen, common council, and freemen of Philadelphia this plan of the improved part of the city surveyed and laid down by the late Nicholas Scull. Philadelphia; Sold by the editors, Matthew Clarkson and Mary Biddle, 1762. Map. Retrieved from the Library of Congress, https://www.loc.gov/item/74692589/.