Caernarfon Traders gan/by Keith Morris
http://www.carnarvontraders.com/index.shtml
Caernarfon 1969
http://www.youtube.com/watch?v=UJMeNS5ZtCk&feature=share
Hen Fapiau /Old Maps
Hen Fap o ynysoedd Prydain 1806
Mapiau 2 fodfedd cynnar Arolwg Ordnans, Cymru a Lloegr
http://gallery.bl.uk/viewall/default.aspx?e=Ordnance%20Survey%20Drawings
Mapiau Degwm Cymru ar Lein/ Tithe Maps of Wales on line http://cynefin.archiveswales.org.uk/
Sefydliad Astudiaethau Hanes Morwrol Cymru
http://www.morol.eu/
Archaeologia Britannica gan Edward Llwyd
http://archive.org/stream/archaeologiabrit00lhuy#page/n3/mode/2up
Pedair Cyfrol / 4 Volumes: o Lyfrau ‘Lives of British Saints’ https://archive.org/details/livesbritishsai03fishgoog https://archive.org/details/livesbritishsai04fishgooghttps://archive.org/details/livesofbritishsa03bariuofthttps://archive.org/details/livesofbritishsa04bariuoft
TAIR CYFROL/ Three Volumes: An Inventory of the Ancient Monuments in Caernarvonshire:
https://books.google.co.uk/books/about/An_Inventory_of_the_Ancient_Monuments_in.html?id=TGPu616n3vsC
Geiriaduron Cymraeg / Cymraeg Saesneg on line Dictionaries Welsh and Welsh English
Geiriadur Prifysgol Cymru
http://www.geiriadur.ac.uk/
Geiriadur yr Academi (Geiriadur Saesneg Cymraeg Bruce Griffiths ar lein)
http://www.geiriaduracademi.org/
http://www.gwynedd.gov.uk/DATRhagorolNET/Chwilio.aspx?iaith=cy
http://papuraunewyddcymru.llgc.org.uk/cy/home?
http://www.llgc.org.uk/index.php?id=2
www.llennatur.com
Cymdeithas Ddinesig Caernarfon Civic Society 