Map of the general interest networks of French railway companies on December 31 1937, eve of the creation of SNCF. This map represents the concession holder de jure, although in some cases a third-person actually operated a conceded line. This map only shows general interest lines in Metropolitan France, as opposed to local interest lines and lines located in French overseas colonies.
Own work
Shapes of borders, coasts and rivers use data from Geofla 2016 and EGM 2020 databases, published by Institut géographique national under Licence ouverte / Open license from Etalab.