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Further notes on education in the diocese of Denbighshire 1738
National Library of Wales Journal, Cyfrol 11, tudalen 83

Jones, I.
Voluntary system at work
Transactions of the Honourable Society of Cymmrodorion, 1931 - 1932, tudalen 149.

Jones, M.C.
The charity school movement
1938, tudalen 408.

Owen, R.
Ysgolfeistri Mr. Charles o'r Bala
1898, tudalen 110

Prichard, T.W.
History of Old Endowed Grammar School, Ruabon
Denbighshire Historical Society Transactions, Cyfrol 20, tudalennau 147 & 154.

Report of the charitable endowments
1893, tudalen 221.

Report on the state of education in Wales
1847, Cyfrol 3.

Shankland, T.
Sir John Philipps and the charity school movement.
Transactions of the Honourable Society of Cymmrodorion, 1904 -1905 tudalen 216.

Williams, A.H.
Origins of the Old Endowed Grammar Schools of Denbighshire.
Denbighshire Historical Society Transactions, Cyfrol 2, tudalen 17.

Williams, H.C.
Athrofa Llangollen
Seren Gomer, 1894, tudalen 18.