1. This plan of the city of Philadelphia and environs is respectfully inscribed to William Sansom, Esqr who has contributed more than any other citizen to embellish the same, by the number, beauty and uniformity of his buildings / [cartographic material] Yale Public content 1819. 2009-01-20T19:25:16Z. 2015-10-27T22:23:21Z. Desilver, Robert, 1779-1837. Desilver, Cammeyer & Acock). English. Public. Philadelphia (Pa.).