1. RP 10435 Reference (shelfmark): RP 10435 Title: Scope & Content: RICARDO, David. Autograph letter to [Thomas Joplin], July 1822. MALTHUS, T. R. Autograph letter to Nassau William Senior, Jan 1831. Creation dates: 1822-1833. Collection Area: Western Manuscripts Languages: English Date Range: 11 May 2015 Extent: 3 photocopy sheets.