doi:10.7916/d8-4yjb-8f93Philadelphia and its environsbookstextStreetscapes (Urban design)--Pennsylvania--Philadelphia--Pictorial works.Public buildings--Pennsylvania--Philadelphia--Pictorial works.Historic buildings--Pennsylvania--Philadelphia--Pictorial works.Philadelphia (Pa.)--Pictorial works.Philadelphia (Pa.)--Description and travel.University of Pennsylvania Pictorial works.Independence Hall (Philadelphia, Pa.) Pictorial works.