| 1 | Trevelyan, M. The Land of Arthur, John Hogg, London 1895. |
| 2 | Jarman, A. O. H. The Legend of Merlin, University of Wales Press, Cardiff 1960. Jarman, A. O. H. The Later Cynfeirdd, in A Guide to Welsh Literature vol I, ed. by A. O. H. Jarman and G. R. Hughes, Christopher Davies, Swansea 1976. Jarman. 'Early stages in the development of the Myrddin Legend' in Studies in Old Welsh Poetry, ed. by Dr. Rachel Bromwich and Dr. R. Brinley Jones, U.W.P. 1978. Jarman. 'The Welsh Myrddin Poems' in Arthurian Literature in the Middle Ages. ed. by R. S. Loomis, Clarendon Press, Oxford 1959. |
| 3 | Watkin, M. 'The chronology of the Black Book of Carmarthen on the basis of its Old French phenomena' The National Library of Wales Journal, vol.XIV No. 2, 1965. |
| 4 | Geoffrey of Monmouth The History of the Kings of Britain, translated with introduction by Lewis Thorpe, Penguin Books 1976. |
| 5 | Arthurian Chronicles represented by Wace and Layamon, J. M. Dent, London n.d. |
| 6 | Cavendish, R. King Arthur and The Grail, Weidenfeld and Nicolson, London 1978. |
| 7 | Tatlock, J. S. P. The Legendary History of Britain, Gordian Press, New York 1974. |
| 8 | Williams, Sir Ifor Armes Prydein, The Dublin Institute for Advanced Studies 1972. |
| 9 | Parry, J. J. and Caldwell, R. A. 'Geoffrey of Monmouth' in Loomis (ed), op.cit. |
| 10 | Clarke, B. Life of Merlin, University of Wales Press, Cardiff 1973. |
| 11 | Gerald of Wales The Journey Through Wales; The Description of Wales, Penguin 1978. |
| 12 | Prophwydoliaeth Myrddin Wyllt, M. Jones, Priory Street, Carmarthen (n.d.) |
| 13 | Stephens, G. A. The County of Merlin as the Provenance of The Perlesvaus, Address to Swansea Rotary Club, October 1941. |
| 13 | 'Carmarthenshire and The Glastonbury Legends', Carmarthen Journal, June 2 & June 9, 1939. |
| 14 | Anon. Llangunnor Hill: A Loco Descriptive Poem with notes, Carmarthen 1794. |
| 15 | Morris, R. H. (ed.) Parochialia Pt. III, Cambrian Arch. Ass., London, July 1911. |
| 16 | Rhys, J. Lectures on the Origin and Growth of Religion, (Hibbert Lecture 1886), Williams and Northgate 1898. |
| 17 | Morgan, Mrs. 'A tour to Milford Haven in the year 1791' Carmarthenshire Notes, vol. I, Llanelli 1889. |
| 18 | Banks, Sir J. 'Journal of a tour in Carmarthenshire 1767' Transactions of Carmarthenshire Antiquarian Society, vol XV, Pt. 37. |
| 19 | Grealey, S. 'The Hill Fort on Merlin's Hill, Abergwili, Carmarthenshire' The Carmarthenshire Antiquary, 1971. |
| 20 | Donovan, E. Excursions in South Wales and Monmouthshire in the year 1804, vol. II, London 1805. |
| 21 | Malkin, B. H. The Scenery, Antiquities, and Biography of South Wales, vol. II (2nd Edition), London 1807. |
| 22 | Ceredig Davies, J. Folk-Lore of West and Mid-Wales, Aberystwyth 1911. |
| 23 | Rhys, J. Celtic Folklore, Welsh and Manx, vol. II. Oxford 1901. |
| 24 | Bradley, A. G. Highways and Byways in South Wales, Macmillan & Co., London 1903. |
| 25 | Roberts, A. 'Letter to Editor', Archaeologia Cambrensis, 1876. |
| 26 | Parry, T. A History of Welsh Literature, translated by H. Idris Bell, Clarendon Press, Oxford 1955. |
| 27 | Camden, W. Britannia, London 1637. |
| 28 | Rowland, J. 'Merlin's Prophecies', Carmarthenshire Notes, vol. I., Llanelli, 1889. |
| 29 | Rhys Phillips, D. A History of the Vale of Neath, Swansea 1925. |
| 30 | Rowlands, W. Cambrian Bibliography, edited and enlarged by D. Silvan Evans, Llanidoes 1869. |
| 31 | Watney, H. 'Notes and Queries' The Red Dragon, (Ed. by James Harries), vol. IX, Jan.-June 1886 Cardiff, p 35. |
| 32 | Spurrell, W. Carmarthen and its Neighbourhood, 2nd Edition, Carmarthen 1879. |
| 33 | Lloyd Hughes, E. 'That Oak Again', Carmarthen Journal, April 21, 1978. |
| 34 | Ross, A. Pagan Celtic Britain, Routledge. |
| 35 | Stepney-Gulston, A. 'Carmarthen: The Old Oak Tree', Transactions of Carmarthenshire Antiquarian Society, vol. 4, p.56. |
| 36 | Aitken, Alex Poetical Pieces, Carmarthen 1856. See Transactions of Carmarthenshire Antiquarian Society, vol. 18, p. 29. |
| 37 | Lodwick, J. & V. The Story of Carmarthen, St. Peter's Press, Carmarthen 1972. |
| 38 | Parry Jones, D. Welsh Country Upbringing, The Ffynon Press 1976. |
| 39 | Curtis, M. The Antiquities of Laugharne, Pendine and their neighbourhoods, 2nd edition, London 1880. |
Evans, A. C. 'Merlin, Tales and Verses about him', Miscellanea, N.L.W. MS 12,368E.
Wilkins, C. 'Carmarthen and Merlin the Wizard', Tales and Sketches of Wales, Cardiff 1879.
Hughes, G. M. 'Carmarthen and the Arthurian Legend', Unison — A Carmarthen Magazine, vol. I, No. 2, 1935.