Changes of the boundaries of departments in Île-de-France in 1964-1968.
Own work. Source :

boundaries : openstreetmap.org OpenStreetMap contributors
changes : File:Seine-1968 FR.png by Utilisateur:Revas under license CC-BY-SA-3.0
changes : File:Ile de France departments 1968 evolution map-fr.svg by Sémhur under license CC-BY-SA-4.0
Glorious 93