SR Regulations Train Signalling Signalmen's Instructions For Signalling. 1945. BR 30143, 112 pages.
SR Regulations for Train Signalling on Double and Singles Lines with amendment
Southern Railway 1935 regulations Train Signalling Double Lines booklet RARE
British Transport Commission Railways Regulations Train Examiners Greasers 1953
1920 The Baltimore and Ohio Railroad Company Rules & Regulations Train Book
LMSR Book Of Instructions Regulations Train Signalling Electric Token Block 1934
