Papurau Syr T. H. Parry-Williams,
- B-P.
- Sub-fonds
- 1865-1987.
Papurau Syr T. H. Parry-Williams,
Papurau'r Fonesig Amy Parry-Williams,
Papurau Henry Parry-Williams, tad THP-W, a phapurau Canolfan Ysgol Rhyd-ddu,
Papurau, 1877-1920, Henry Parry-Williams (1858-1925) a phapurau Canolfan Ysgol Rhyd-ddu, 1972-1979.