Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Shaft Story (booklet)
32 page booklet stapled at centre. Published by Industrial Relations Training Branch National Coal Board. First Edition 1958, Reprinted 1959 & 1964.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.