Nine visiting nurses ready for work, ca. 1909
Bureau of Water Spring Garden Testing Station, 1901
Immigrant family, ca. 1900, nurse in black
Northeast Sewage Plant opening, 1951
City officials tour new interceptor sewer, 1953
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Water Before and After Roxborough
State Road triple pipeline construction, 1904
Upper Roxborough Filter Beds Complete, 1903