FRTG

The Festiniog Railway Traveller's Guide has appeared as a number of editions over the years. Some contained information regarding the rolling stock, and specifically an edition noted with a blue cover has been used extensively in Festipedia. This edition contains a Stock List dated 1.4.1992, and Research is credited to Michael Seymour, the then Archivist of the FR, so it should be reliable. See here for this and other editions.