Ambrose, W. Cofiant y Parch. Samuel Jones, Maentwrog : yn nghydag amrywiol o'i bregethau. Dolgellau : Argraffwyd gan Evan Jones, 1845. 96p
Brown, Roger L. The parish of Ffestiniog with Maentwrog : the tribulations of three nineteenth century incumbents. Journal of the Merioneth Historical and Record Society 10 (1987/88), p. 241-8
Ellis, Jane C. O felin Maentwrog i'r 'Castle Bakery'. Fferm a Thyddyn 14 (1994), p. 25-6
Hughes, Gwyndaf. House on a hill : a history of Plas Tan y Bwlch and the Maentwrog Valley. Maentwrog : Snowdonia National Park Study Centre, 1989. 48p
Register of persons entitled to vote as parochial electors for the parish of Maentwrog (No. 49) in the County of Merioneth, between the 31st day of December, 1906, and the 1st day of January, 1908. Aberystwyth : J. J. Gibson Cambrian News Office, [1908?] p208-213
Williams, Gareth H. Lord Newborough and Mr Madocks' 'very fortunate circumstance' : a chapter in the development of slate transport in the vale of Maentwrog. Industrial Gwynedd 2 (1997), p. 26-33.
Williams, Griffith. Yr hynod William Ellis, Maentwrog, sir Feirionydd. Hughes and Son, 1875.