Okla. Stat. tit. 21 § 487
Under the designation executive, legislative, ministerial or judicial officer as mentioned herein are included the Governor, Lieutenant Governor, Speaker of the House of Representatives, Corporation Commissioners, all the heads of the departments of the state government, judges of all the courts of this State, mayors, clerks, councilmen, trustees, commissioners and other officers of all incorporated cities and towns, public school trustees, officers and boards of managers of the state university and its several branches, state normals, the penitentiaries and eleemosynary institutions, members of the commissioners court, and all other officials of the State, district, county, cities or other municipal subdivisions of the state.
Okla. Stat. tit. 21, § 487