Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Pamphlet
Pamphlet: The Vortex Water Wheel (an improved turbine) manufactured by Williamson Brothers, Canal Iron Works, Kendal (Leeds 1876)
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.