Today's map comes from the excellent collection and map site of Henny Savenije.
This G. Robert de Vaugondy work from the mid-18th century named "Le Japon" features the islands of Japan and the Korean peninsula. This map is an impressively accurate piece for its time, particularly for a European cartographer. We find it interesting how the map aligns the Sea of Japan with the peninsula by naming it the "Mer de Corée."
Many thanks to Mr. Savenije for sharing this map!