The Calvin Coolidge Memorial Foundation and the Vermont Division for Historic Preservation plan many events at President Calvin Coolidge State Historic Site in Plymouth, Vermont. We work together to educate and entertain the many visitors to this rural Vermont town. CCMF is responsible for church services at the Union Christian Church and schedules ministers and musicians for the first Sunday of the month, July to October for an 11 a.m. service at the Union Christian Church, owned and maintained by the Coolidge Foundation.