Week of Prayer for Christian Unity , 1991-01-20 - 1991-01-25, Container: Grace Presbyterian Church - Box 4, Folder: 5 - Presbytery of Lake Huron. Churches, COL-CHURCHES. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/28164 Accessed December 06, 2025.