found
:
U.S. Board on Geographical Names. Guide to geographical names ... 1945.
found
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Corcuera, A. Corea, monte de diamante, 1984.
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Meiji kansei jiten, 1969
(T?kanfu; established in 1905 by the imperial ordinance no. 240; supervised Korean government; changed to Ch?sen S?tokufu in 1910)
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Wikipedia, June 13, 2013
(大韓帝? = Daikan Teikoku; r.; name of the country, from 1897 through 1920)