The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Dan Yr Ogof Show Caves. Upper Swansea Valley. Three Nuns. Harvey Barton
The Nuns. Dan Yr Ogof Caves. Swansea Valley Caves. T. J. and D. Davies. RP
Dan Yr Ogof Caves. Swansea Valley. Harvey Barton
Frozen Waterfall Dan Yr Ogof Caves. Swansea Valley. Harvey Barton
Frozen Waterfall. Dan Yr Ogof Caves. Swansea Valley. Harvey Barton. 1980
Imdq. Cathedral Cave. Dan Yr Ogof Caves. Swansea Valley. Harvey Barton. 1979
Imda New Discoveries at Dan Yr Ogof Caves. Swansea Valley. First explored Easter 1966 by S. W. C. C. Harvey Barton. 1970
New Discoveries at Dan Ur Ogof Caves. Swansea Valley. First explored Easter. 1966. by S. W. C. C. Harvey Barton
