The Patricia Koo Tsien and Kia Chi Tsien papers document the decades of internationally rooted lives of the Tsien couple, as well as family history materials on the Koo and Tsien families. The bulk of the papers consist of files associated with the professional and personal trajectories of Patricia Koo Tsien and Kia Chi Tsien, arranged in respective series. Also included are materials pertaining to the research of Koo and Tsien's family histories, in particular manuscripts, transcripts, and annotated copies of the Wellington Koo Memoir, and materials on Oei Huilan, Madame Wellington Koo.
The V. K. Wellington Koo papers document the diplomatic legacy of Wellington Koo as a Chinese statesman and diplomat of the 20th Century. The papers primarily consist of materials collected during Koo's diplomatic career, relating to the Lytton Commission, 1932-1933; the League of Nations, 1931-1940; the United Nations, 1944-1946; his ambassadorships to France, 1932-1941; to Britain, 1941-1946; to the United States, 1946-1956; as the Senior Advisor to the Republic of China from 1956; and as the Judge on the International Court of Justice, 1957-1966. The materials include correspondence, diaries, memoranda, manuscripts, documents, notes, speeches, maps, photographs, printed material, and audio visual material. The bulk of the materials emphasizes China's domestic and foreign affairs, such as the Sino-Japanese conflict, World War II and the Cold War in the Far East region, as well as the League of Nations and the United Nations.