Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Minutes
'Industrial Courts Act, 1919. Court of Inquiry into Hours of Coal Tippers & Trimmers, 1920 Vol I. Many pages with no illustrations.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.