Roman Catholic Diocese of Helena 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, Idaho, and Montana. Before becoming a diocese, this was the Vicariate of Montana (covering the whole territory and then state of Montana). For its first twenty years, the diocese served all of Montana. In 1904 the new Diocese of Great Falls-Billings
Helena–West Helena, Arkansas the strategic river town of Vicksburg, Mississippi. Later in the year, Helena served as the launching point for the Union Army in the capture of Little Rock, the state capital. A thriving blues community developed here in the 1940s and 1950s as rural musicians relocated for city jobs. Mechanization had reduced the need for farm workers. The city continued to grow until the closing of the Mohawk Rubber Company, a subsidiary of Yokohama Rubber Company, in the 1970s. Unemployment surged shortly after. Among the attractions in Helena–West Helena are the Delta Cultural Center, the Pillow-Thompson House (owned and operated by