Darby, Delaware County, Pennsylvania, 1877
History of Belfield (1934)
Photos from the Philadelphia Anglers’ Club
Two Frankford Creek Bridges, 1896-1899
Centre Square Water Works, Drawings of Intake Basin
Ground Plan, Great Central Sanitary Fair, Philadelphia
Andorra Run aka Wise’s Mill Run
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Centre Square Water Works, Latrobe Plans, 1799
Visionary planning report for Philadelphia region, 1928