Changes of the boundaries of departments near Tarn-et-Garonne before and after the creation of this department in 1808.
Own work. Source :

File:France_map_Lambert-93_with_regions_and_departments_polygons-blank.svg by Sting under licence GFDL or CC-BY-SA 3.0
Création du Tarn-et-Garonne sur splaf.free.fr
Sémhur (talk)