Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
G.W.R. Automatic Train Control (booklet)
Description and notes on the G.W.R. system of automatic train control. 15 page illustrated booklet with 5 fold out diagrams attached at rear.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.