1. (Numbers in brackets refer to inset, Fig. 1)
2. 1951. The Dynamics of Faulting. London 2nd Edn.
3. The Silurian Rocks of the Talerddig District, Montgomeryshire
4. 1947. Structural Geology. New York.
5. The Geology of the Country between Llanelidan and Bryneglwys