Instructions, Southern Railway, 'New and Altered Signals', Signal instruction No. 40 (1926), Issued by Edwin C. Cox , Printed by Waterlow and Sons Limited., London, 1926.
Instructions, Southern Railway, 'New and Altered Signals', Signal instruction No. 40 (1926), Issued by Edwin C. Cox , Printed by Waterlow and Sons Limited., London, 1926.