This little publication (15cm by 10 cm/16 pages) is a tourist history of the Galway to Clifden railway. Having said that, it is concise and delivers the salient facts that any visitor to Connemara who encounters the remains of this line may ask.
With no ISBN, it may be hard to obtain, but Kenny's Bookshop in Galway is a stockist.
Kennys Bookshop, Galway