Paris Metro map from 1937.
Holy crap — that’s cool. I live at Pernety station (line 13) right now, and my current route to work (Massy-Paliseau) is EXACTLY the same as 1937! The rest of the system is remarkably different. Lignes have merged, split and re-routed. Hooray for old metro maps!
This thread is closed to new comments. Thanks to everyone who responded.