London & North Eastern Railway Signalling Regulations 1929

Block signalling regulations, London & North Eastern Railway (North Eastern Area), "Extracts from the Appendix to the General Rules and Regulations and to the Working Time Table", no date on covers but refers to 19th July 1929, "this pamphlet is intended for the use of students attending the Block Signalling Classes, in connection with the Secondary Examinations", 52 pages, includes incomplete block signalling regulations, book format.