Originally issued on 11 April 1932 by the GW and LMS railways, this booklet contains highly detailed instructions on the working of the lines in the Forest of Dean and across the Severn Bridge to Sharpness and Berkeley Road. Maximum length and weight of trains, token instructions, lists of ground frames and signal boxes, the working of the swing bridge section of the Severn Bridge, maintenance, signal lamps etc. etc. PLUS operation of every single branch, colliery line and private siding then in use. Invaluable gen for historians, enthusiasts and modellers.