The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
The Subterranean River Axe. J. Arthur Dixon. 1970
Wookey Hole Cave. The Subterranean River Axe. J. Arthur Dixon
The Subterranean River Axe. J. Arthur Dixon. Newport. I. W. England
The Subterranean River Axe. Weston super Mare. J. Arthur Dixon Ltd
The Subterranean River Axe. Wookey Hole Caves. J. Arthur Dixon Ltd. 1971
The Subterranean River Axe in Wookey Hole Cave. J. Arthur Dixon
