KICHENSIDE, G.M. AND WILLIAMS, ALAN. — British Railway Signallimg.

London: Ian Allan, 1968. Second edition. Contents; 1.Development of British Signalling; 2.Types of Signal - Semaphore; 3.Types of Signal - Colour-Light; 4.Allied Safety Devices; 5.The Block System; 6.Power Operation; 7.Automatic Train Control; 8.Emergency Working; 9.Other Signalling Systems. Appendix 1.Signal Box Bell Codes; Appendix 2.Lever Colours. Pp.104, 8 pages of colour signal diagrams + many black & white photos and figure illustrations. Red illustrated laminated boards, sunning to spine. G+.