The LNER Encyclopedia

Some months ago I observed a book, (about A5 size) which detailed the ECML from Kings Cross to the North, on a dealers stand at exhibition. It showed line formations, gradients, tunnels etc. but I was short of funds at the time.
Does anyone know the title and author of such a book?
Mojo.

Is this the volume to which you are referring?

Many thanks for your reply br.
That could be the one although I cannot remember it being so colourful.
Will google to see what is available to get a copy.
Mojo