Okla. Const. Schedule, § 43
§ 43. Filing and preservation of Constitution – Secretary of State.
When this Constitution shall have been ratified by the people of the State of Oklahoma and the State admitted into the Federal Union, under the same, as engrossed on parchment and signed by the officers and members of this Constitutional Convention, it shall be filed in the office of the Secretary of State and sacredly preserved by him, as the fundamental law of the State of Oklahoma.