Mae yr Archifdai Lleol yn barod i dderbyn cyhoeddiadau Plaid Cymru o ddidordeb lleol er mwyn i haneswyr y dyfodol eu ddarllen.
Cyn mynd â’r defnydd mewn bydd yn well cysylltu gyda’r person a enwebwyd i sicrhau eu polisau a’r termau ac amodau.
Nodir mae’r Llyfrgell Genedlaethol â ddiddordeb mewn defnydd o bwys cenedlaethol.
| ARDAL | CYFEIRIAD | GWEFAN | FFÔN | CYSWYLLT | EBOST |
| Ynys Mon/Anglesey | Bryn Cefni Industrial Estate, Llangefni. LL77 7JA |
www.anglesey.gov.uk/archives | 01248 7519131 | Hayden Burns | archives@anglesey.gov.uk |
| Morgannwg/Glamorgan | Clos Parc Morgannwg Caerdydd/Cardiff. CF11 8AW |
www.glamarchives.gov.uk | 02920 872200 | Charlotte Hodgson | glamro@cardiff.gov.uk |
| Dinbych/Denbighshire | The Old Gaol, 46 Clwyd St, Ruthin. LL151HP |
www.denbighshire.gov.uk/archives | 01824 708250 | Jane Brunning | archives@denbighshire/gov.uk |
| Caerfyrddin/ Carmarthenshire |
Parc Myrddin Richmond Tce. Caerfyrddin/Carmarthen SA3 1HW |
http://www.carmarthenshire.gov.uk/ | 01267 228232 | David Cooke | archives@carmarthenshire.gov.uk |
| Penfro/Pembrokeshire | Prendergast, Haverfordwest SA61 2PE |
www.pembrokeshire.gov.uk/archives | 01437 775456 | Nikki Bosworth | recordoffice@pembrokeshire.gov.uk |
| Powys | County Hall, Llandrindod. LD15LG | http://archives.powys.gov.uk | 01597 826085 | Roz Williamson | archive@powys.gov.uk |
| Gwent | Steelworks Rd, Ebbw Vale. NP23 6DN |
www.gwentarchives.gov.uk | 01495 353361 | Angela Saunderson | enquiries@gwentarchives.gov.uk |
| Conwy/Conway | The Old Board School, Lloyd St, Llandudno. LL30 2YG | www.conwy.gov.uk/archives | 01492 577550 | Susan Ellis | archifau.archives@conwy.gov.uk |
| Fflint/Flintshire | The Old Rectory, Hawarden. CH5 3NR | www.flintshire.gov.uk/archives | 01244 532264 | Steven Davies / Claire Harrington | archives@flintshire.gov.uk |
| Ceredigion | Old Town Hall,Queens Sq. Aberystwyth SY23 2EB | www.archifdy-ceredigion.org.uk | 01970 633697 | Helen Palmer / Ania Skarzynska | archives@ceredigion.gov.uk |
| Caernarfon | Council Offices Shirehall St Caernarfon LL55 1SH |
www.gwynedd.gov.uk/archives | 01286 679087 | Lynn C Francis | LynnCFrancis@gwynedd.gov.uk |
| Meirionydd | Ffordd y Bala Dolgellau LL40 2YF |
www.gwynedd.gov.uk/archives | 01341 424682 | Merfyn Wyn Tomos | MerfynWynTomos@gwynedd/gov.uk |