The records of the Overseas Department document the missionary endeavors of The Episcopal Church in China from 1835 to 1954 and include correspondence, reports, financial records, publications, and visual records. The three geographic districts in which Episcopal missions were located, Shanghai, Hankow, and Anking, as well as Chung Hua Sheng Kung Hui, the Holy Catholic Church in China, are represented.

This collection contains minutes, correspondence, reports, and printed material pertaining to the Chung Hua Sheng Kung Hui (Holy Catholic Church in China) over the period 1940-1967, including House of Bishops minutes and reports on Christian Churches under Communist rule in China, as well as photocopies of Bishop Tsu's personal correspondence from 1928-1972 received from the Yale Divinity Library.

The World Mission in Church and Society records document the efforts of the office to support schools, hospitals, and missions established during the Church's early overseas involvement. Correspondence, reports, medical shipment records, photographs, and printed materials are included.