Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
G.W.R. Locomotive Diagrams South Wales Docks
37 page booklet in card covers, consisting of 36 diagrams with index at front. Dated 23 May 1928.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.