Okla. Stat. tit. 62 § 381
All bonds issued or voted in good faith by any municipal corporation, county, township or school district, in this state, since the admission of this state into the Union, where the amount thereof does not exceed the limit prescribed by the constitution, and where the election at which the same were voted was conducted in substantial compliance with the law, and where the proceedings of the municipal authorities of any such municipal corporation, county, township or school district calling any such election were conducted in substantial compliance with the law, and the bonds were authorized by the requisite vote as required by the constitution and laws of Oklahoma, and when the full contract purchase price has been paid to the municipal corporation, county, township or school district issuing the same, are hereby made legal and valid, notwithstanding any irregularities in the proceedings of the authorities of such municipal corporation, county, township or school district in calling any such election or in holding the same.
Okla. Stat. tit. 62, § 381