Columbia subject headings:
Sanitary engineering--History.
Water-supply engineering--History.
Water-supply--History.
Harvard subject headings:
Municipal engineers--Biography.
Municipal water supply--History.
Sanitary engineering--History.
Water-supply engineering--History.
Water-supply engineers--Biography.
Water-supply--History.
Princeton subject headings:
Municipal engineers--Biography.
Municipal water supply--History.
Sanitary engineering--History.
Water-supply engineering--History.
Water-supply engineers--Biography.
Water-supply--History.