Papers Relating To Messrs Powles And Tyler, Ychwanegu i'r clipfwrdd 1-9016. Is-fonds 1599-[1915]. Rhan oSir Leonard Twiston Davies Collection,
Papers Apparently Unrelated To Messrs Powles And Tyler, Ychwanegu i'r clipfwrdd 9017-9120. Is-fonds c. 1250-1886. Rhan oSir Leonard Twiston Davies Collection,