American Catholic Historical Society
- The Oldest Catholic Historical Organization in the United States. Founded in 1884.
- http://www.amchs.org/

Texas Catholic Historical Society
- Has the objectives of discovery, collection, preservation, and publication of historical material relating to the Catholic community in Texas.
- http://www.onr.com/user/cat/TCHS.htm

American Catholic Historical Association
- Gives details on meetings, awards, history and publications of this society affiliated with the American Historical Association.
- http://research.cua.edu/acha/

Catholic Record Society of the Diocese of Columbus
- Events, persons, organizations, and places in Ohio historically associated with the Diocese of Columbus.
- http://www.catholicrecordsociety.org