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 Tsuyee Pei papers document Pei's professional and personal life and provide a glimpse of his career in East Asia and North America during the last years of WWII and the years immediately following. The bulk of the papers consists of correspondences, memoranda, cables and telegrams, and other career files from between 1943 and 1949. These materials highlight Pei's role as first, the general manager of the Bank of China, then, the governor of the Central Bank of China, and offers great details on the development of the banking system in China, wartime aid and relief, foreign exchange market, and international business and economic cooperation. Other materials include newspaper clippings, greeting cards, and printed matter.