Very well produced and written book looking at the evolution of the South African Railways 2 foot gauge NG/G16 Garratts and the NG15 Kalahari 2-8-2 tender locomotives. It also looks in detail at the specific members of both classes now on the Welsh Highland Railway, and modifications made to them for service there. Numerous B&W and colour photos, often detail, some drawings, including good GAs and maps. 136 hardbound pages.