Great resource for researching about the history of the LT&S Railway (i.e. C2C line), specifically before it was absorbed into the LMS in the 1920s. This also includes a lot of information about the locomotives too and a lot of great accompanying pictures.
A bit dense with information and details though at times including full passenger timetables which was a bit beyond the detail I was looking for. Recommend for anyone really interested in the history of the LT&S but is maybe is a bit too much if you just have a passing interest in the subject.