- Montana Constitution of 1884: 1971-72 OCPA 1
- Constitution of the State of Montana: As Adopted by the Constitutional Convention August 17, 1889; Ratified by the People October 1, 1889; Amended ... State Admitted, November 8, 1889: 1967
- Montana Constitutional Convention, 1971-1972
- Montana Constitution of 1884
- Rules of the Montana Legislature