[외국도서] Railways and Industry on the Vale of Neath: Pontypool Road-Crumlin Viaduct-Hengoed-Nelson and Llancaiach-Treharris, Taff Vale Extension (Hardcover)
[외국도서] The B T H and North British Type 1 Bo-Bo Diesel-Electric Locomotives - British Railways Classes 15 and 16 : Development, Design and Demise (Hardcover)