Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
Board of Health Newspaper Clipping Scrapbooks at City Archives of Philadelphia, 1891-1908
CITIZENS’ BUSINESS: 1939-1946
Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
Wooden Pipes in Philadelphia
State of the Schuylkill River in 1876: Sewage pollution and possible remedies
The Water and Drainage History of Philadelphia: A seven-part course
Half a Century of Clean Water
Volume of Sludge from 1,000,000 Gallons of Sewage
Diagram Showing Rate Between Bulk of Wet Sludge and Its Percentage Moisture