Okla. Stat. tit. 21, § 21-975: Evidence of knowledge by officers and prosecutor of

existence of slot machines or punch boards in community.

The fact that any slot machine or punch board is set up,

operated, conducted, displayed, or exposed in a public place for any

considerable length of time, provided the time and place is

sufficient to put a reasonably efficient officer upon inquiry and

notice, this shall be received along with other evidence in proving

that the sheriff and district attorney of the county and the

constable and policemen of the district, city or town where the same

occurred had knowledge of the same.