This history of the Duluth Diocese of the Catholic Church, which was formed in 1889 and embraced the counties of Aitkin, Becker, Beltrami, Carlton, Cass, Clay, Cook, Crow Wing, Hubbard, Itasca, Kittson, Lake, Marshal, Norman, Pine, Polk, and St. Louis, includes short biographies of early missionaries in Northern Minnesota. It also has histories and photographs of some early Catholic churches, schools, orphanages, and hospitals, information on Indian missions and on the Sisters of St. Benedict, who founded Duluth's St. Mary's Hospital and four other hospitals in the diocese. The book also provides a list of priests who worked in the diocese from 1889 to 1914.