1. An act to provide against infectious and pestilential diseases: passed April 14th, 1820 Author(s): New York (State). Legislature. Publication: [Albany : s.n. 1820] Subject(s): Quarantine -- legislation & jurisprudenceCommunicable DiseasesNew York
2. Report of the committee appointed by the Orange County Medical Society, to analyze the waters of Chechunk Spring, in the town of Goshen Publication: Goshen : Plinted [sic] by T.B. Crowell, 1820 Subject(s): Mineral Waters -- analysisNew York
3. A biographical memoir of Hugh Williamson, M.D., LL. D: delivered on the first of November, 1819, at the request of the New-York Historical Society Author(s): Hosack, David, 1769-1835 Publication: New-York : Printed by C. S. Van Winkle, printer to the University, 1820 Subject(s): PhysiciansNew YorkWilliamson, Hugh, 1735-1819.