"Cythral o dân" : cofio 75 mlynedd ers llosgi'r Ysgol Fomio /
Vittle, Arwel.
Talybont : Y Lolfa,
2011.
Lewis, Saunders, 1893-1985
Valentine, Lewis
Williams, D. J. (David John), 1885-1970
Nationalism
Nationalists
Civil disobedience
Protest movements
Trials (Arson)