Wales South 1924. [Geological Map of] the Volcanic Series of Roch, Trefgarn, and Ambleston, Pembrokeshire, colour
- printed folded map at 1:31,680 (2 ins = 1 mi), 28 x 50cm in ‘The Volcanic Series of Trefgarn, Roch and Ambleston (Pembrokeshire)’ extract from Proceedings of the Geological Society, v.80. 1924. By Herbert H Thomas and Arthur H Cox. Pp.520-548. Map and text in very good condition.