Darganfod ac Archwilio’r Casgliad

Map degwm Betws Tir Iarll, Morgannwg

Cwm Clywedog cyn cael ei foddi dan ddŵr argae...

Pont Y Cyslte Aqueduct, north Wales

View in the vale of Llangollen

Dee Viaduct

View Near Llangollen, North Wales

View in the vale of Llangollen

Valla Crusses near Llangollin, belonging to...

Dee Viaduct

Pant-y-meibion, Llansanffraid Glynceiriog

Felin-y-moch, Bontuchel (Dinb)

Safle adeiladu, Cwm Elan, 1896

Gwaith adeiladu argae, Cwm Elan, 1898

Adeiladu'r biblinell, gwaith dŵr Cwm Elan, 1897

Pentref Llanwddyn, a foddwyd gan Lyn Efyrnwy ym...

Llythyr oddi wrth cangen Sirol Môn, Undeb...