The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Dol y Mynach Dam. Elan Valley. Photo Precision Limited. Colourmaster International
Dol y Mynach Dam. Elan Valley. KNWEV 103. Jarrold. Cotman Color
Elan Valley. Dol Y Mynach Dam. Photo Precision. Colourmaster International
Elan Valley. Dol y Mynach Dam. Photo Precision Limited. Colourmaster International. 1974
Dol y Mynach Dam. Elan Valley. Colourmaster International. Precision
Elan Valley. Dol Y Mynach Dam. Photo Precision. St. Ives. Colourmaster International. Postcard. Great Britain
Dolmynach Dam. Elan Valley. Barton. 1971
Claerwen Dam. Elan Valley. N.0642. Dennis. 1967
