Sandy Run Watershed and the Holmesburg Water Works
Roberts Mill, Wingohocking Creek, 1871
Wingohocking Sewer across Penn St.
History of Belfield (1934)
19th century life in South Philadelphia’s marshland
Schuylkill River Hydrographical Survey 1861-66 by H. P. M. Birkinbine
View of Fairmount Water Works, ca. 1827
Plan of Lemon Hill and Sedgley Park, Fairmount and Adjoining Property, 1851
Penn’s Treaty with the Indians (Watson’s Annals)