Plan is undated but is ca 1988.
Carlisle (PSB) Control Area - Kingmoor Interlocking 13/10/1986
Carlisle (PSB) Control Area - Oxenholme Interlocking 10/01/1988
Carlisle (PSB) Control Area - Plumpton Interlocking 1988
Carlisle (PSB) Area - Sheet 6 of 6 Interlocking 13/10/1986, South - Caldew
1967 Carlisle Control Area Railway Signalling Signal Plan Diagram Newcastle Line
1934 Fascimilie Kilmarnock Control Area Local Trip Engine Railway Working
