Okla. Stat. tit. 2, § 76
The special election mentioned in Section 5, of this act, shall be called by the county commissioners of each of the said counties when requested to do so upon a petition signed by thirty percent (30%) of the resident tax payers of said counties, and said petition shall designate the time and place of holding said free district fair.
Laws 1923, SB 283, c. 125, p. 206, § 6.