McConnell Germ-Proof Filters ad
Bureau of Water Spring Garden Testing Station, 1901
Northeast Sewage Plant opening, 1951
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Water Before and After Roxborough
Includes activities to maintain the healthfulness of the city, and the animals (such as pigs) and diseases (such as cholera, yellow fever, and typhoid fever) that were the objects of public health efforts.