| Ddisgrifiad / Description | Bartholomew's Revised Half Inch Map of Great Britain, sheet 27, covering North Wales.
Appended:
Symbols and comments have been added to the map. Red circles indicate the existence of a Fire Station; villages underlined indicate the presence of a Police Station; red stars indicate ?; notes added re hydro-electricity at Dolgarrog, Rowlyn Tunnel, Pen-y-Gaer Tunnel and weirs at Tafolog and Rowlyn. |