GWR Great Western Railway Auto Trailers: Pt. 1: Pre-grouping Vehicles by John...
Great Western Auto Trailers Part 1 Pre-Grouping Vehicles by John Lewis and published by Wild Swan Publications in 1991.
John Lewis presents an in depth study of the Great Western's Auto trailers which allowed lightly used branch lines to be operated without the need for running round. Volume one looks at the early examples.
The book is crammed full of plans, photographs and operating details.