Northeast Philadelphia history, one page at a time: The Holmesburg Library Scrapbook Collection
Panoramic Manayunk: Views Past and Present
James W. Phillips Letter Book, 1904-1913
Map of Philadelphia showing Population in year 1920
Relative to Philadelphia's water and sewer systems, this includes pipes, pumps, plants, water works, reservoirs and other water storage facilities, and other aboveground and underground structures related to the city’s water supply, sewerage system, and drainage. In a larger sense, infrastructure includes many other human-made structures, including roads, highways, bridges, tunnels, canals, and other things of that nature.