Significant Dates in the History of  The Archdiocese of Oklahoma City

October 12, 1875
Permanent missionaries arrive in Indian Territory

July 5, 1876
Status of Apostolic Prefecture of the Indian Territory

May 29, 1891
Status of Apostolic Vicariate of the Indian Territory

August 17, 1905
Diocese of Oklahoma is created

November 14, 1930
Name Change: Diocese of Oklahoma City and Tulsa

February 6, 1973
Archdiocese and Province of Oklahoma City is established

February 7, 1973
Diocese of Tulsa is established