Penn, William. 1726. A collection of works, to which is prefixed a journal of his life, with many original letters and papers not before published. London: Sowle. Volume 2 of 2 [Owned by Robert Proud, signed and dated 1763 From the Robert W. Ryerss library, includes bookplate and library markings], 1726, 1763, Case: Rare Book Cabinet, Shelf: 1. Books and Bound Manuscripts, FP.2016.004. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/13677 Accessed April 20, 2025.