Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Haverfordwest (Williams & Williams), 2054 canlyniadau
- CMA: Calvinistic Methodist Archive, 1769 canlyniadau
- Dolaucothi Estate Records,, 546 canlyniadau
- Aberystwyth Shipping Records,, 544 canlyniadau
- Powis Castle Estate Records,, 518 canlyniadau
- Harpton Court Estate Records,, 385 canlyniadau
- Welsh Church Commission Papers,, 384 canlyniadau
- Tredegar Estate Records,, 369 canlyniadau
- J. Glyn Davies Papers,, 242 canlyniadau
- Wynnstay Estate Records., 173 canlyniadau
- Pob un
- Welsh Baseball Association, 5 canlyniadau
- Cymdeithas yr Iaith Gymraeg, 4 canlyniadau
- Davies, Margaret Sidney, 1884-1963, 2 canlyniadau
- Tŷ Toronto (Aberfan, Wales), 2 canlyniadau
- Jones, Simon, 1879-1967, 2 canlyniadau
- Manchester Academy of Fine Arts, 2 canlyniadau
- Owen, Henry, 1844-1919., 2 canlyniadau
- Cae'r berllan Estate (Llanrwst, Wales), 2 canlyniadau
- Great Western Railway Company, 2 canlyniadau
- King Edward VII Welsh National Memorial Association., 2 canlyniadau
- Pob un
- Gruffydd, R. Geraint, 13 canlyniadau
- Williams, J. E. Caerwyn (John Ellis Caerwyn), 10 canlyniadau
- Cymdeithas yr Iaith Gymraeg, 4 canlyniadau
- Welsh Baseball Association, 4 canlyniadau
- Lloyd, David, 1912-1969 -- Performances, 4 canlyniadau
- University College of Wales (Aberystwyth, Wales), 4 canlyniadau
- Mining Association of Great Britain., 3 canlyniadau
- New Commonwealth Society., 3 canlyniadau
- Ormsby-Gore family, Barons Harlech -- Correspondence., 3 canlyniadau
- Jenkins, Geraint H., 2 canlyniadau
- Pob un
- Wales, 8 canlyniadau
- Montgomeryshire, 2 canlyniadau
- Aberystwyth, 2 canlyniadau
- Great Britain, 2 canlyniadau
- England, 2 canlyniadau
- Colwyn Bay (Wales), 1 canlyniadau
- Troyes (France), 1 canlyniadau
- Wales -- National Assembly -- Elections, 1 canlyniadau
- Cwmrhydyceirw (Wales), 1 canlyniadau
- Little Ness, 1 canlyniadau
- Pob un
- Aberystwyth (Wales), 6 canlyniadau
- Llanuwchllyn (Wales), 6 canlyniadau
- Campaign literature -- Wales, 4 canlyniadau
- Education -- Wales, 4 canlyniadau
- Sunday schools -- Wales -- Swansea, 3 canlyniadau
- Plants -- Wales, 3 canlyniadau
- Birds -- Wales, 3 canlyniadau
- Oxford (England), 3 canlyniadau
- Welsh language -- Usage, 3 canlyniadau
- Elections -- Wales, North., 3 canlyniadau
- Pob un
- Letters, 38 canlyniadau
- Clippings (Books, newspapers, etc.), 12 canlyniadau
- Radio scripts, 8 canlyniadau
- Minutes, 6 canlyniadau
- Corporate minutes, 5 canlyniadau
- Corporate minutes., 5 canlyniadau
- Diaries, 5 canlyniadau
- Folk songs, Welsh., 4 canlyniadau
- Accounts, 4 canlyniadau
- Folk music -- Wales., 3 canlyniadau