Established in 1793, the Diocese of Louisiana and the Floridas included all territory from the Rocky Mountains to the Atlantic Ocean and from Canada to the Gulf of Mexico except the Diocese of Baltimore, which was in territory belonging to the United States). Before 1793, Louisiana was under the jurisdiction of the Diocese of Santiago de Cuba and before 1762, under the authority of the Diocese of Quebec. The department's holdings consist of 12 microfilm rolls. A finding aid to the records is available online through the University of Notre Dame.
"Diocese of Louisiana and the Floridas" appeared in PastPorts Newsletter, March 2022. PastPorts is the Newsletter of History & Genealogy at St. Louis County Library. All back issues are available for free in PDF format.