Davies, G. Griffith Jones, Llanddowror: athro cenedl, Pen-y-bont ar Ogwr, Morgannwg Ganol, Gwasg Efengylaidd Cymru (1984) 120 p., ill. [ISBN: 1850490015]
Jenkins, Geraint H. 'An old and much honoured soldier': Griffith Jones, Llanddowror (NLW's site) Welsh History Review 11
Jenkins, R.T. Gruffydd Jones, Llanddowror, 1683-1761, Caerdydd, [Wales], Gwasg Prifysgol Cymru (1930) 57,  p., ill., facsim., map. p.
Jones, D. Life and times of Griffith Jones, sometime rector of Llanddowror. Clonmel, Co. Tipperary, Ireland, Tentmaker Publications (1995) 200 p. [ISBN: 1899003134] [Reprint. Originally published: London: Society for Promoting Christian Knowledge, 1902].It is a general history of the movement, and doesn't mention specific locations of any of the schools. Here is a brief extract.
Jones, D.Ambrose. Griffith Jones: Llanddowror, Wrecsam, Hughes a'i Fab (1923) 176 p.
Kelly, T. Griffith Jones, Llanddowror, pioneer in adult education, Cardiff, UWP (1950) 56 p.
Morgan, J. Four biographical sketches: Bishop Ollivant, Bishop Thirlwall, Rev. Griffith Jones, Vicar of Llanddowror, and Sir Thomas Phillips, Q.C.: with a chapter on 'The Church in Wales', London, Elliot Stock (1892) 206 p.