1. RP 4312/1 Reference (shelfmark): RP 4312/1 Title: Scope & Content: TWAIN, Mark. Autograph Letter Signed to Macleod Yearsley Creation dates: 1902 Collection Area: Western Manuscripts Languages: English Date Range: 11 Jan 1990 Extent: 1 photocopy
2. RP 4312/2 Reference (shelfmark): RP 4312/2 Title: Scope & Content: DARWIN, Charles. Autograph Letter Signed to Dr F Albin Gaertner Creation dates: 31 May 1829 Collection Area: Western Manuscripts Languages: English Date Range: 11 Jan 1990 Extent: 1 photocopy