1. Reply to two letters of William Roscoe, esquire, of Liverpool, on the penitentiary system of Pennsylvania Author(s): Vaux, Roberts, 1786-1836 Publication: Philadelphia : Jesper Harding, printer, 1827 Subject(s): PrisonsPunishment -- psychologyPennsylvania
2. Solitary confinement Publication: [Philadelphia? : s.n., 1829] Subject(s): PrisonsPunishment -- psychologyNew York
