1. Sandwich mineral springs Author(s): Duffield, Samuel P., author Publication: [Sandwich, Ontario?] : [publisher not identified], [1869?] Subject(s): Mineral Waters -- analysisMineral Waters -- therapeutic useNatural Springs -- analysisBalneologyOntario
2. Minnequa Spring, Bradford Co., Pa Publication: Philadelphia : William Mann, printer, [1875?] Subject(s): Natural Springs -- analysisBalneologyPennsylvania
3. Minnequa Spring, Bradford County, Pa Publication: Williamsport, Pa. : Gazette and Bulletin Printing House, 1876 Subject(s): Natural Springs -- analysisBalneologyPennsylvania
