The map below is of the Korean island of Ulleungdo (鬱陵島) from the atlas "Haedong Jido" (海東地圖), which is believed to have been made in the early 1750s. In addition to showing several rock formations offshore of Ulleungdo, the map also shows a small island off the east shore labeled as "所謂 于山島," which translates as "the so-called Usando." Korea claims that Usando was the old Korean name from "Dokdo" (Liancourt Rocks), but this map and many others show that Usando was just a neighboring island of Ulleungdo, not Liancourt Rocks. The map says that Ulleungdo had a circumference of about 200 ri (80 km.), and was about eighty ri (32 km.) from east to west and fifty ri (20 km.) from north to south. The map is stored at Seoul National University's Kyujanggak Center for Korean Studies.
In addition to showing the island of Usando and several rock formations around Ulleungdo, the maps also shows five small islands off the southern shore of Ulleungdo. It is unclear what these islands were referring to, but several old maps of Ulleungdo show these same five, unnamed islands. The map also shows a list of the flora and fauna on the island, which includes sea lions (可支魚), cats (猫), and rats (鼠).