The Sangoku setsujozu (A Map
of Three Adjoining Countries) attached to the Sanggoku tsuran
zusetsu (An Illustrated General Survey of Three Countries) by
Hayashi Shihei (1738 -1793), an eminent scholar of the day. This
map was published in 1785 and shows the territories of each county
in a different color: Korea in yellow and Japan in green.
On the map Ullungdo and Tokdo are shown in their exact positions
in yellow. Along side the islands Hayashi has written "Korean
possessions." Click on the desired view for a full picture.