A.C. Abbott, MD
McConnell Germ-Proof Filters ad
Bureau of Water Spring Garden Testing Station, 1901
Northeast Sewage Plant opening, 1951
Southeast Sewage Treatment Works diagram, 1955
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Water Before and After Roxborough