1. The Carboniferous Limestone and Millstone Grit of North Wales;Morton,1876
2. The Denbighshire Series of S. Denbighshire;Lake;Quart. Journal Geol. Soc.,1895
3. The Zonal classification of the Wenlock Shales of the Welsh Borderland;Elles;Quart. Journal Geol. Soc.,1900
4. The Carboniferous Succession below the Coal Measures in North Shropshire, Denbighshire and Flintshire;Hind;Geol. Mag.,1906