1. Results of examinations of water from the river Schuylkill Author(s): Cresson, Charles M., author Publication: Philadelphia : Wm. Mann, printer, 1875 Subject(s): Water SupplyWater QualityRiversPhiladelphia
2. Our water supply Author(s): Tucker, Willis G. (Willis Gaylord), 1849-1922, author Publication: [Albany?] : [publisher not identified], [1880?] Subject(s): Water SupplyRiversWater QualityNew York
