Treaties and other international acts series. 6842. Extension of loan of vessels, U.S.S. Muir, U.S.S. Sutton, U.S.S. Erben, and U.S.S. Holt, agreement between United States and Republic of Korea, effected by exchange of notes dated Seoul, Jan. 22 and Feb. 20, 1970; [entered into force Feb. 20, 1970]