Yr hen Ddyffryn a Charmel a'u canghenau, sef hanes cychwyniad a chynydd Crefydd perthynol i Gyfundeb y Methodistiaid Calfinaid yn Ngorllewin Plwyf Margam ac Aberafon gan John Nicholas, Carmel, Aberafon ('˜The old Dyffryn and Carmel chapels and their branches, or a history of the beginning and growth of religion relating to the Calvinistic Methodist Connexion in the west of Margam parish and Aberavon'); includes a history of Dyffryn, Carmel, Saron Penycae, Bethany Port Talbot, Beulah Groes Margam, Dyffryn Taibach, Grove Place Aberavon and the Forward Movement Hall, Aberavon. 1910