Naval officer. Correspondence, journals, notebooks, official records, printed matter, and miscellaneous material relating to Colhoun's service with the Mediterranean and Brazil squadrons before the Civil War, his command of ships of blockade squadrons during the Civil War, and his command of the Asiatic Squadron.

U.S. assistant secretary of state, minister and ambassador to China and minister to Australia. Personal correspondence, memoranda of conversations and engagement books, speeches and writings, and other material chiefly relating to Johnson's diplomatic service in China, Australia, and east Asia.

Naval officer and historian. Correspondence, subject files, speeches, articles, book file, printed matter, newspaper clippings, and other material relating to Knox's activities as director of the United States Office of Naval Records and Library, as secretary of the Naval Historical Foundation, and as an author of books and articles on naval affairs.

U.S. secretary of state, U.S. senator from Pennsylvania, and lawyer. Correspondence, memoranda, speeches, writings, reports, articles, notebooks, bills and resolutions, legal records, biographical sketches, library catalog, clippings, printed matter, scrapbooks, cartoons, and other papers relating chiefly to Knox's service as U.S. attorney general, secretary of state, and senator from Pennsylvania.

Army officer and diplomat. Correspondence, memoranda, dispatches, reports, Chinese and Japanese documents, and other papers relating chiefly to Le Gendre's service as American consul at Amoy, China, 1866-1872; as advisor in the Japanese government and in a diplomatic post representing Japan in Taiwan, 1872-1875; and as advisor in the Korean government, 1890-1899. Includes Le Gendre's journal, with drawings and photographs, in which he recounts his travels among aborigines in Taiwan.

Army officer. General and family correspondence, diaries, military and subject files, notebooks, dispatch books, speeches and writings, financial papers, scrapbooks, and other material pertaining chiefly to McCoy’s military career and to various diplomatic assignments.

Secretary of United States Senate and foreign affairs consultant. Correspondence, agenda, reports and other writings, subject and travel files, bibliographies, photographs, and other papers chiefly documenting Valeo's career as an East Asian specialist, foreign affairs advisor, and secretary of the United States Senate.