What is the Sea of Korea? Simply put, it is the body of water between Japan and Korea. This marvelous digital collection from the USC Digital Libraries brings together two private collections comprised of 172 maps of this expanse of water dating from 1606 to 1895. The maps also vary in language: English, French, Japanese, Dutch, Korean, Latin, German, and Russian. One good starting point is the 1794 map "China, Drawn from the Best Authorities," which happens to be executed as a hand-colored copper engraving. Also, visitors can create their own collection by clicking on the "Add" button. Students of geography, East Asian history, and related subjects will find this entire site to be most delightful.