Records include Gaudet’s Board of Trustees minutes and reports (1940-1949, 1952) and financial records (1925-1953). ACI Director’s correspondence (1921, 1932, 1940-1945) is brief, primarily with Dr. Warren Kearny of the Gaudet Board of Trustees and the Church Periodical Club. The Home Department Director, Rev. George A. Wieland, has correspondence (1949) concerning building projects and improvements to Gaudet’s educational program. Historical summaries (1920-1934) provide background information. This series includes a survey report of the school by the George Peabody College for Teachers (1946).

The school's Board of Trustees records (1935, 1940, 1944-1946) are slight, but other documentation is present concerning finances and the closing of Gailor Industrial School, dating from 1919 to 1951. ACI Director's correspondence (1938-1944) is with Gailor's principal and the Bishop of Tennessee, and with others concerning the school's building projects. Historical information can be found in historical summaries (1924-1928), publicity (1943), and a survey report of the school by the George Peabody College for Teachers (1946).

The DFMS archive on the American Church Institute (ACI) is largely focused on the years 1906 through 1967, although documentation on individual schools dates from 1867 (see AO-00-R0061-02-12). The collection represents a reasonably comprehensive record of ACI during its lifetime and, in most cases, a much briefer synopsis of the life of each of the individual schools, although student rosters and academic records are not present. The overall ACI administrative records consist of minutes, reports, legal and financial documents, correspondence, historical summaries, building plans, studies, surveys, publications, photographs, and ACIN's corporate seal. Records of the individual schools include copies of minutes of the boards of trustees, reports, correspondence, financial documents, institutional histories, personnel records, and publicity materials.