- NLW MS 10767C.
- Ffeil
- 1945-1946.
Material relating to the engravings by John Petts published in Gwyn Jones: The Green Island (Golden Cockerel Press, 1946), including letters, 1945-1946, to Christopher Sandford, the publisher, from Gwyn Jones, John Petts, John [Northcote] Nash, artist, and others; two original drawings by John Petts; and some page-proofs and pulls of illustrations. Professor Gwyn Jones's letters also contain several references to the preparation for publication by the Golden Cockerel Press of Gwyn Jones and Thomas Jones: The Mabinogion (1948).