Historical Societies
- State Historical Society of Missouri
- 1020 Lowry Street
- Columbia, Missouri 65201
- 800-747-6366
- Missouri Historical Society
- P.O. Box 11940
- St. Louis, Missouri 63112-0040
Genealogical Societies
- Missouri State Genealogical Association
- P.O. Box 833
- Columbia, Missouri 65205-0833