21. Add MS 23098 Reference (shelfmark): Add MS 23098 Title: Scope & Content: ALPHABETICAL "index of Engravers, extracted from [George] Vertue's MSS., 1761, by Horace Walpole." Autograph. Paper, Folio. Horatio Walpole, 4th Earl of Orford 1791: Index of engravers abstracted from G. Vertue's MSS.: 1761. Collection Area: Western Manuscripts Languages: English Date Range: 1761 Extent: 1 item