Roman Catholic Diocese of Helena was formed to serve eastern Montana. The seat of the diocese is in the Cathedral of St. Helena in the state capital of Helena. It was completed in 1914. The bishops of the Diocese of Helena and their years of service: Roman Catholic Diocese of Helena The Diocese of Helena () is the Catholic diocese for western Montana with its cathedral located in Helena, the state capital. The diocese was erected from the year-old Vicarate of Montana on March 7, 1884, while Montana was still a territory. The diocese is a suffragan of the Archdiocese of Portland, which encompasses Oregon,
Ohio State Route 635 in 1937. Its original routing between SR 18 in Bascom and US 6 near Helena is the same one that it utilizes to this day. No significant changes have taken place to the alignment of SR 635 since it was established. Ohio State Route 635 State Route 635 (SR 635) is a north–south state highway in the northwestern portion of the U.S. state of Ohio. The southern terminus of SR 635 is at SR 18 in Bascom. Its northern terminus is approximately east of Helena at a T-intersection with US 6. SR 635 travels through northwestern Seneca County and southwestern