Wooden Water Pipe, removed from Market Street, December 6, 1901
Portrait of Benjamin Henry Latrobe
Centre Square Engine House, ca. 1807
Bethlehem Water Works, 2011
Vue du Bosquet des trois Fontaines, 1689-91
Roman Aqueduct in Segovia, Spain
“Town street scavengers from life,” Kollner, 1844
Southeast Corner of Third and Market, Philadelphia
Benjamin Franklin, the Fireman
Norman Lofton inspects sewer at Ditman and Sheffield, 1987