Major French RailRoad companies at the begining of the XXth. century

Here is a map of France showing very approximatively the geographical location of the tracks of each company. Of course, the center of the star is Paris...
 

Here are the names of the major station(s) in Paris for each RailRoad company.

Cie. de l'Est	Cie. du Nord	Ouest / Etat	P.L.M.	P.O.
Gare de l'Est Gare de la Bastille	Gare du Nord	Gare Saint-Lazare Gare Montparnasse	Gare de Lyon	Gare d'Austerlitz Gare d'Orsay.