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Davies & Metcalfe Railway Railway Publicity Booklet x5
The Olva Terminal Check Valve Davies & Metcalfe 1950's Railway Part Brochure
British Railways Davies & Metcalfe Locomotive Air Valves EV-4/5 AB-96-01/AB-92-9
British Rail Train Crew Manual - Davies and Metcalfe Dual Brake Equipment
THE RAILWAY CENTENARY – A RETROSPECT by Randall Davies
VALE OF RHEIDOL LIGHT RAILWAY - W.J.K. Davies. Ian Allan 1970
