1. RP 7617/1 Reference (shelfmark): RP 7617/1 Title: Scope & Content: Autograph Letter Signed from Margaret Cavendish (Duchess of Newcastle) to Mons. Zealicen Creation dates: 15 July 1660 Collection Area: Western Manuscripts Languages: English Date Range: 19 Mar 2001 Extent: 2 photocopies
2. RP 7617/2 Reference (shelfmark): RP 7617/2 Title: Scope & Content: Autograph Letter Signed from William Cavendish (Duke of Newcastle) to an unnamed nobleman Creation dates: 2 August 1657 Collection Area: Western Manuscripts Languages: English Date Range: 19 Mar 2001 Extent: 1 photocopy