Cookiein7:
1930.SN371 Metropolitan Line. Alterations to signals and introduction of automatic and semi-automatic signals, Uxbridge to Ruislip. 16/07/1930 .
Cookiein7:
1930.SN373 Metropolitan Line. Alterations to signals and introduction of automatic and semi-automatic signals, Ruislip to Rayners Lane. 20/08/1930 .
