Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Penrhyn Quarry (booklet)
A pamphlet dealing with the real issues in connection of the dispute between Lord Penrhyn and some of his late employees.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.