Large highly detailed map of Italy, including Corsica, Sardinia and Malta. Includes notes of various routes and distances by sea, as well as towns, railroads, roads, rivers, mountains and other geographical notes. The Papal States and Malta are colored differently from the rest of the map, for reasons which are not explained. Nice topographical detail. Dufour's Atlas Universel was one of the great large format French atlases of the mid 19th Century.