For the last few years I’ve been purchasing e-books from the British Transport Treasures website, which is dedicated to supplying good quality digitized copies of out-of-print British transport titles, some dating back to the turn of the 20th Century and many of them really difficult to get hold of.  Prices are generally very low, and support the hosting of the website.  I came across the site when chatting with the site’s owner, who’s an expert on the local history of the area where I used to live in London.  I think that the site is a brilliant way of keeping some of these old titles alive and accessible.  The following railway e-books may be of interest to local railway enthusiasts:

The Story of the Cambrian, by C. P. Gasquoine,Woodall, Minshall, Thomas & Co. Ltd., 1922 [ebook]
£4.05
Hard back book, 10”x 6.5 “, pp. 158, 34 B&W half tone images, appendices of old timetables. Map of Cambrian Railways.
http://www.britishtransporttreasures.com/product/the-story-of-the-cambrian-by-c-p-gasquoinewoodall-minshall-thomas-co-ltd-1922-ebook/

Cambrian Railways A Souvenir – 1895 [ebook]
£2.15
Bbooklet, 9.5”x 6.5”, 40pp superb black and white photographs, adverts Cambrian services, coloured map of railway on back cover.
http://www.britishtransporttreasures.com/product/cambrian-railways-a-souvenir-1895/

Locomotives of the Cambrian, Barry and Rhymney Railways. By M. C. V. Allchin, self published 1943 [ebook]
£2.95
http://www.britishtransporttreasures.com/product/locomotives-of-the-cambrian-barry-and-rhymney-railways-by-m-c-v-allchin-self-published-1943-ebook/

Welsh Mountain Railways 1924 [ebook]
£2.15
Booklet 7.25”x 4.25 50pp. inc. covers, two maps, 16 black and white photographs tipped in, not paginated.
http://www.britishtransporttreasures.com/product/welsh-mountain-railways-1924

Snowdon and the mountain railway, by anon. (“E. W.”) Woodall, Minshall & Co. nd. But c1900. [ebook]
£3.95
Paper covers, silk cord binding, 11X 8”, P. 18 inc. covers and adverts. 12 B&W photogravure photographs of trains, the railway Snowdon and surroundings.
http://www.britishtransporttreasures.com/product/snowdon-and-the-mountain-railway-by-anon-e-w-woodall-minshall-co-nd-but-c1900-ebook/

The Wonderland of Wales, GWR, Ffestiniog, Snowdon and Welsh Highland Railways, Timetables, etc., summer 1923 [Booklet]
£2.00 Booklet, 7.25”x 4.75”, pp. 16, inc. paper covers.
http://www.britishtransporttreasures.com/product/the-wonderland-of-wales-gwr-festiniog-snowdon-and-welsh-highland-railways-timetables-etc-summer-1923-booklet/