Birch’s Views of Philadelphia, 1800
Drainage area plan, early 19th century
Schuylkill River from below the South Street Bridge, 1873
Philadelphia from Belmont, West Park (Picturesque America)
Chestnut Street Bridge, on the Schuylkill River (Picturesque America)
Schuylkill River from below the South Street Bridge, 1873
Plan of Philadelphia, John Hills, 1796
Centre Square Water Works, Drawings of Intake Basin
Ground Plan, Great Central Sanitary Fair, Philadelphia
Centre Square Water Works, Latrobe Plans, 1799
