A great source of footage of the railways during the age of steam. In particular “Goodbye to Steam”, also known as “Railway Modernization (1958). In typical Pathe style it trumpets the new age of the diesel and elelctrification with interesting coments about future sources of power which no longer sound quite so promising. At 4.35 minutes in it shows the new signal box at York.
https://www.youtube.com/watch?v=pZf9uSaXwQc
For other Pathe films go to www.britishpathe and search for LNER. items include the following –
https://www.britishpathe.com/video/lner-trains-aka-l-n-e-r-trains/query/LNER
https://www.britishpathe.com/video/VLVA24L70RLK7ONVDEZ99LOZGWVV-SILVER-JUBILEE-SETS-RECORD-RAILWAY-SPEED/query/LNER