Redeemer Lutheran Church in Marshalltown will celebrate its 100th anniversary Sunday with a special 3 p.m. service and fellowship following a 9 a.m. worship. Founded by German Lutherans in 1926, the Missouri Synod congregation now worships at 1600 S. Center St., maintains active membership across generations, and will feature choirs, handbells, a guest preacher, and a shared meal.