Midland Railway Diagram Of Gradients Foreign Lines &c. An early book, probably used to plan Midland Loco movements over 'foreign' routes. The index makes interesting reading listing 42 different Railway Company diagrams from the Metropolitan Railway, Hammersmith & City Railway, Dean Forest Railway, Bristol Port & Pier Railway and Severn & Wye & Severn Bridge Railway. A the diagrams are linen, some dated from 1870's. This must be viewed to appreciate the extensive content.