A notebook of Edward Lhuyd, written 1698 (see pp. 10, 52), containing details of monumental inscriptions in Llanboidy (p. 6), Defynnog (p. 7), Llanfihangel (Mongomeryshire) (p. 17), Trawsfynydd (p. 31), Llangadog (p. 53), Herefordshire (pp. 58, 72), Llanllywenfel (p. 75), Llanafan Fawr (p. 77) and Llandanwg (p. 89); sketches of stone crosses (pp. 59-61, 73), stone circles (pp. 27, 44, 94, 99, 100) and further stones (pp. 2, 9, 42-3, 56), lime pit fossils (pp. 14, 44, 54, 62, 84-5, 145), a window (p. 3), Llangorse lake (p. 36), and the shore by Barry Island (pp. 37-8); and details of tombstones and their epitaphs (pp. 4, 11, 13, 39, 47, 63, 69, 81). The volume also includes notes relating to manuscripts and their owners (pp. 65-74), etc. An autograph note on p. 120 states: 'Mr. Edward Lhwyd was born at Lappiton parish, his nurse is now [?1698] living at Krew green (where he was nurs'd) 9 yre of her at Mrs. Judith Cowfield at Lappiton / his nurse says he is 41 years old 3 days before Michaelmas last according to Catherine Bowen his nurse to ye best of her memory'.

One hundred and one holograph letters, 1849-1850 and undated, written to A. C. Ramsay. The writers include John Barlow, secretary, Royal Institution (the recipient's communication relating to the geological survey of North Wales, a card of admission to Syon Gardens), Edwd. T. Bennett, Ross (the discovery of plants in Snowdonia), Wm. Bennett, Ross (plants from Symonds rocks near Ross and from Snowdonia), Amelia Browne, Wolverhampton (personal, references to friends), Alfd. H. Browne, Wolverhampton (personal), Charlotte A. M. Cookman (née Johnes), Monart House (the writer's illness, the receipt of fossils from the Palaeontographic Society), Wilbraham Falconer, Bath (personal, the recipient's health), Wm. Ferguson, Glasgow (a proposed natural history survey of Clydesdale), Emily M. Forbes (an account of Mr. Jukes's wedding, personal), William Hope, Liverpool (an invitation), Henry M. Ingram, Tyn-y-Celyn, Dolgelly (the writer's 'botanizing excursion'), Jas. F. Ireby? [from London] (the writer's paintings), Trevor E. James, Woodbank, near Caerleon (personal), John Johnes, Dolaucothi (the writer's visit to Ireland, the illness of Charlotte [Cookman], news of neighbours and friends, comments on the recipient's survey, the progress of the school at Llandovery), Augusta Jukes, from Aber, [Wolverhampton], and Merchlyn (personal, references to the geological survey of her husband [Joseph] Beete [Jukes] in North Wales), Henry Kingsmill, junior, Lincolns Inn (an examination at Grays Inn, personal), Agnes Loudon, Bayswater (an invitation), W. Macdonald (an application for an appointment 'at the Geological' [Museum]), Wm. Mathews, Edgbaston (a memorial on behalf of ironmasters), M. E. Playfair (personal), E. Ramsay, his mother, Glasgow, etc. (personal, news of friends and relatives, the recipient's studies), Eliza Ramsay, his sister, from [Glasgow], etc. (the Queen's visit to Scotland, John's appointment with the Royal Insurance Office, personal), J. C. Ramsay, Trinidad (the writer's business affairs, with references to sugar making, personal), Willm. Ramsay, Glasgow, etc. (the writer's business, family news), W. B. Rogers, London (geological studies), F. M. Selwyn, Temple (concerning an invitation, personal), J. Sharpe, Glasgow ( personal), Anna Maria Williams, Llandovery (Charlotte Cookman's health, news of Steuart, of the Johnes family, and of others, the progress of the school building), Wm. Williams, Llandovery (family news), W. R. Steuart Williams, Montgomery and Welshpool (the writer's curacies at Llandyssill in Montgomeryshire and at Welshpool, news from Carmarthenshire, a reference to the death of 'Gwallter Mechain'), and George Wilson, Edinburgh (introducing Professor Munch from Norway). Some of the letters are addressed to Capel Curig and to the Geological Museum, London.