The Korean American Leftists in the 1950s collection (1950-1961, 1988-1994) consists of four folders of government documents from the Immigration and Naturalization Service (INS) as well transcripts from the U.S. Congress House Un-American Activities Committee (HUAC) regarding suspected Communism amongst Korean Americans Leftists in the 1950s. The majority of the collection focuses on Do Sik Shynn, a North Korean man born in 1896 who emigrated to Seattle, Washington in 1920 and was arrested in 1954 after failing to report his address. The voluminous photocopied documents from the INS reveal a paper trail from prior Korean American detainees beginning in 1950, which eventually led to the suspicion of Shynn's Communist ties. Shynn's fight with the INS for his freedom spanned years after his initial order of deportation and subsequent appeal. The records fail to reveal if Shynn's appeal was accepted.

The remainder of the collection is comprised of two folders. The first contains collected photocopied U.S. Congress HUAC transcripts regarding Korean-American Communist activities in the Pacific Northwest Area (Seattle), Los Angeles, Hawaii, and Hollywood between the years 1951 to 1955. The second reveals correspondence between USC's Korean Heritage Library and the INS from 1988 and 1994 in an attempt to secure the documents for this collection, so that it may assist scholars in piecing together the full story of Koreans in the United States throughout history.