Locomotif trên o'r enw Elan, Marning and Co,...
Trên locomotif o'r enw Nant Gwyllt, Cwm Elan
Trên o'r enw Coel gyda'r Fan Arolygu a Mr....
Craeniau ar argae Caban Coch, Cwm Elan yn ystod...
Tŵr Falf Foel, Cronfa Garreg-ddu, Rhaeadr, Cwm...
Dol y Mynach Dam, Elan Valley under...
Craig Goch dam, Elan valley under construction...
Fred Beatrup, Rhingyll yr Heddlu, Rhaeadr
The Little Chapel in Elan Valley, William R. Stone
Caban Coch dam, Elan Valley Laying of the...
Caban Coch interior of cement cooling shed.
Caban Coch construction, Elan Valley
Dechrau adeiladu argae Caban Coch, Cwm Elan
Craig Goch Dam Main Trench, Elan Valley
Construction of Caban Coch Dam
Old Nantgwyllt Church
Elan Valley Aqueduct Teme Bridge Leintwardine
Elan Valley Aqueduct Stour Canal crossing.
Frankley Reservoir Curved Wall looking East.
Deepwood Siphon Outlet
Elan Valley Aqueduct pipe.
Elan Valley Aqueduct Wye Siphon Lowering pipe.
Elan Valley aqueduct tube being inserted.
Elan Valley Aqueduct Teme Bridge Leintwardine...
Elan Valley Aqueduct Nantmel Dingle Crossing North
Elan Valley Aqueduct Maes y Gelli construction.
Elan Valley Aqueduct. Knighton Tunnel workings.
Elan Valley Aqueduct Downton syphon inlet
Elan Valley Aqueduct construction
Elan Valley Aqueduct Carmel looking East
