Meyers-1905: Railway spine
Roell-1912: North British Railway · North Eastern Railway · Railway Association · London, Brighton and South Coast Railway · Madeira Mamoré Railway · Midland Railway · Railway Commission · Taff Vale Railway · Texas and Pacific Railway Company · Virginian Railway · Railway Spine · South Eastern and Chatham Railway · Southern Railway · London and South Western Railway · Glasgow and South Western-Railway · Grand Trunk Railway of Canada · Great Central Railway · American Railway Association · Caledonian Railway · East Indian Railway · Great Eastern Railway · Intercontinental Railway · Lancashire and Yorkshire Railway · London and North Western Railway · Great Indian Peninsula Railway · Great Northern Railway · Great Western Railway