Diesel-electric traction is included to complete the story up to the 1970's. Electric traction has been important as railway motive power since early in the twentieth century.
SOUTHERN ELECTRICS H/B book A Pictorial Survey 1975
1970s Diesels & Electrics, A Steam Enthusiast Looks Back book no.53
IAN ALLAN 1943 ABC DECEMBER SOUTHERN ELECTRICS BOOK 2ND EDTN VERY GOOD UNUSED
Southern Electrics
SOUTHERN ELECTRICS BRIAN RAYNER HBACK
Ian Allan ABC Southern Electrics/Locomotive guides 1943 1950
