Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- National Museum of Wales., 1 canlyniadau
- National Library of Wales., 1 canlyniadau
- Ellis, T. I. (Thomas Iorwerth), 1899-1970, 1 canlyniadau
- University of Wales., 1 canlyniadau
- Griffiths, John Gwyn, 1 canlyniadau
- Peate, Iorwerth Cyfeiliog, 1901-1982, 1 canlyniadau
- Williams, R. Bryn, 1 canlyniadau
- Jarman, A. O. H. (Alfred Owen Hughes), 1 canlyniadau
- Historical Association (Great Britain) -- Records and correspondence., 1 canlyniadau
- National Museum of Wales -- Records and correspondence., 1 canlyniadau
