J.A.O. Preus Resources
Records of Governor J.A.O. Preus, 1921-1938 (bulk 1921-1924)
J.A.O. Preus and family papers, 1853-1946
Minnesota History magazine
- "Maintaining 'Law and Order': The Minneapolis Citizen's Alliance in the 1920s," by William Millikan, Summer 1989
Minnesota Legislative Reference Library
- Inaugural Addresses: 1921
- Farewell Message to the Legislature - 1/7/25