Records relating to the exploring expedition under the command of Lt. Charles Wilkes, 1836–42, 27 microfilm reels, 945 ft. Positive microfilm from the National Archives. The expedition left in August 1838 for the Antarctic, islands of the Pacific, and the northwest coast of America, returning in July 1842. References to Russians in America. The expedition was sent by the U.S. Hydrographic Office. (Film 8)