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.

These records include photographs, minutes, letter press books, and diaries that were produced by or are about the China Mission.