The Congregational Records and the Congregational Historical Materials series relate to the activities and histories of the congregations of the Church of God in Michigan. Congregational Records is alphabetically arranged by Michigan locale and consists of records maintained by the denomination. Included are records maintained by the secretary-treasurer of the denomination's State Board of Church Extension for the period of since the mid 1940s. Each file consists of correspondence with the local church, primarily concerning church building and local activities. Also included are the Monthly Reports that each local congregation filed with the General Assembly office and containing attendance and financial information.