Discover the Tyne Valley - Regional Railways 1987 - video.
One from the archive a programme made for Regional Railways which shows what you can see and visit from the train line between Carlisle and Newcastle. It includes lots of aerial shots of Hadrian's Wall, Newcastle and various other tourist spots along the way.
A vaguely live map of trains, showing approximate positions of some trains.
Closed Railway Stations in the UK (not 100% coverage)
An online railmap - a fantastic mapping resource showing railways past and present, mine line and many other features and lots of useful information.
The North Eastern Railway Association (publishers of the "Hadrian's Wall Line" Guide.)
Old Maps online - a comprehensive historical map archive.