ACI records on St. Mark’s School include the school’s Board of Trustees meeting minutes (1931-1935) and its report to ACI in 1912. Correspondence of founding board member J. A. Van Hoose (1912) and principal Rev. C. W. Brooks (1924) are very brief. Financial records relate to the school’s mortgage (1933-1936). ACI officers’ correspondence covers 1930 to 1940. Historical summaries (1934, c.1940) and a report of the school (1935) provide information about the establishment of St. Mark’s and its programs. The school’s disassociation from ACI in 1941 is touched upon in a Committee on Negro Work report (n.d.) and an ACI memo (1941).