doi:10.7916/d8-9v0r-2s70Geology of the New York City (Catskill) aqueduct; studies in applied geology covering problems encountered in explorations along the line of the aqueduct from the Catskill Mountains to New York CityBerkey, Charles Peter, 1867-1955bookstextGeology--New York (State)--Catskill Mountains.Geology--New York (State)--New York.Geology--New York (State)--Croton River Valley.Geology--Hudson River Valley (N.Y. and N.J.)Catskill Aqueduct (N.Y.)New York City Aqueduct