The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Claerwen Dam Claerwen Valley. KNWEV 101. Cotman Color. Jarrold and Sons. RP. 1979
Dol y Mynach Dam. Elan Valley. KNWEV 103. Jarrold. Cotman Color
Pen y Gareg Reservoir. Elan Valley. KNWEV 104. Jarrold. Cotman Color
25073. Elan Valley. Claerwen Dam. Judges
Elan Valley. Claerwen Dam. Judges 25076
25072. Elan Valley. Claerwen Dam. Judges
Elan Valley. Claerwen Dam. Judges Ltd. 25072. Hastings. England
Elan Valley. Claerwen Dam. F. Frith
