One hundred and forty-six holograph letters, 1846-1847 and undated, written to A. C. Ramsay. The writers include D. T. Ansted (payment for the recipient's professional services to the corporation of Liverpool), Ann Aveline, Oatlands (William Aveline's eye trouble), J. T. Brown?, Berwick ( the writer's professional activities), R. Chambers, Edinburgh (raised beaches in Wales), C. C. Cookman [from Dolaucothi] (violets from Mrs. Johnes), J. Crombie, Edinburgh (a lecture to the Royal Institution, personal), John Crombie, Edinburgh (Dr. Arnott's lecture, the recipient's professorship, news of friends), Geo. Fossett, Aberystwyth (geological studies, an inspection of Cwm Ystwyth lead mine, personal), Eleanor Howden [ from Edinburgh and London] (personal, the writer's visit to France), Oliver Howden, Edin[burgh] (the writer's wedding), Elizabeth Johnes, Dolau Cothi (a search for gold on Gogofau, Glanyrannell sale, news of friends) ( with botanical specimens enclosed), 'Betha' Johnes (thanks for a book, the solution of a riddle, personal), D[avid] Landsborough, Saltcoats (the publication of the writer's 'Excursions to Arran'), Robert Mallet, Dublin ( observations on volcanic vents, earthquakes, etc.), B.? Marshall (an invitation to dinner), J. P. Nichol, Observatory [at Dowanhill], etc. ( astronomical maps and publications), Lyon Playfair (the publication of an article, personal), M. E. Playfair (an Admiralty report by Lyon Playfair, Jenny Lind's recitals in London, the recipient's professorship, Lyon Playfair's health), C. Puggaard, Bewdley, etc. (a geological tour of Wales, personal), E. Ramsay, his mother, Glasgow, etc. (family news, the writer's visit to Arran, the recipient's professorship, the business affairs of J. C. Ramsay), Eliza Ramsay, his sister, [Glasgow and] Edinburgh (personal, news of friends, the business affairs of J. C. Ramsay), J. C. Ramsay, Trinidad (the future of the writer's business, personal), W. Ramsay, Glasgow, etc. (the business affairs of J. C. Ramsay, the recipient's professorship, observations on a visit to the Highlands, the affairs of the North and South Wales Bank, the solution of a geological problem, Frank McGill's concert, a sewerage scheme for Edinburgh, news of friends), James Sharpe [from Glasgow] (business affairs, deaths from typhus fever in Glasgow, the recipient's professorship, news of friends), J. Trimmer, Dublin (the writer's work as inspector of relief committee in Cavan and Fermanagh), W. Walton, Bath (an invitation), Anna Maria Williams, Llandovery (family and local news, the recipient's professorship, a curacy for Steuart Williams, an offer of ℗Đ73,000 for a grove of oaks at Margam), 'Fanny' [Williams] (personal, the recipient's professorship, enclosing verses), W. R. Steuart Williams, Llandovery, etc. (the writer's ordination, the opening of Llandovery Grammar School, personal), John Wilson, Roy[al] Agric[ultural] Coll[ege], Cirencester (the progress of the College, the recipient's accident), and R. O. Wilson, London (an enquiry concerning Mr. Davys Harries, Neuaddfawr, Carmarthen). Some of the letters are addressed to the Geological Survey at Ludlow, at Bishops Castle, at Pen-y-bont (Radnorshire), and at Llanberis, and to the Museum of Economic Geology, Charing Cross, London.

Sixty-three holograph letters, 1849 and undated, written to A. C. Ramsay. The writers include Chas. C. Benett, Lyme Regis (spring tides at Lyme Regis), Alfd. H. Browne, Lancaster (enclosing a specimen of a chiton, personal), Mrs. A. H. Browne (observations on cartoons), Charlotte A. M. Cookman, Monart House [co. Wexford] (thanks for a copy of a lecture), P. M. Grey-Egerton, Tarporley (thanks for specimens, an excursion to Stonehenge), R. Wilbraham Falconer, Bath (a request for books, personal), Jas. G. Forbes, London (personal), John Johnes, Dolaucothi (books, observations on a lecture by the recipient, a 'system of farming on chemical principles' adopted by Mr. Peel of Taliaris, news of friends), Sarah Jukes, Edgbaston ( to Lyon Playfair) (an invitation), Helen M. Keyden, Wembley (a visit to the Society of Arts), R. G. Latham [from London] (a request for the presence of the recipient at the next senate [of University College]), Robt. Mallet, Dublin (thanks for a copy of recipient's introductory lecture), John Percy, Birmingham (the writer's application for an appointment [to University College, London]) (together with an enclosure from Edward Forbes to John Percy), B. R. Perkins, vicar of Wootton Underedge (thanks for a present, personal), M. E. Playfair, Alfreton (personal), E. R[amsey?, from Edinburgh] (the writer's marriage), E. Ramsay, his mother, Glasgow, etc. (deaths from an epidemic in Glasgow, the recipient's membership of the Royal Society, news of relatives and friends), E. Ramsay, his sister [from Glasgow, etc.] (deaths in Glasgow, Sir Robert Peel's speech at the Geological Society's dinner, the writer's method of pressing plants, personal news), J. C. Ramsay, Trinidad ( observations on marriage, the writer's relations with his colleague Eccles ), W. Ramsay, Glasgow, etc. (the possibility of the writer's marriage, the writer's movements, the business affairs of J. C. Ramsay, the writer's application for an agency, personal), J. Sharpe, Glasgow (business, personal) (together with verses enclosed), Thos. Sopwith, Mus[eum of] Econ[ omi]c Geology, etc. (the flag quarries at Llantisilio, west of Llangollen), J[ohn] Sykes, Pembroke College, Cambridge (a vacant professorship at Glasgow), C. R. Weld, assistant secretary, Royal Society (the recipient's election to a Fellowship of the Society), Anna Maria Williams, Llandovery ( the illness of Steuart [Williams) and his resignation from the curacy of Selattyn, the progress of the school, news of friends), and W. R. Steuart Williams, Llandovery (the writer's illness, personal, news of friends). One letter is addressed to the Ordnance Survey, Dudley.