Hi, Mike - thanks -
I think the problem is the spelling (English -> Korean -> English not = Original). The College has no record of any of the spellings.
This person was most likely with the OSS assigned to work with Kim Gu in Chungking in 1944 (or early 1945) and came to Seoul in 1945. He dealt with Korean politicos prominent in 1945-46 - in particular, he worked with Yo Un Hyong until his assassination. Yo was empowered by the Japanese Governor-General to take over Korea a few days before Japan surrendered. He formed the People's Republic of Korea in Seoul in 1945 (not to be confused with 'Democratic People's Republic of Korea' - two different entities).
Yo's relatives are archiving an oral history of Yo's work and want to interview those who had worked with him.