Okla. Stat. tit. 19 § 865.56
In the pursuance of its duties, the planning commission may seek the advice, cooperation and collaboration of appropriate federal, state, municipal and other local governmental offices, departments, agencies, and instrumentalities, educational institutions and research organizations, whether public or private, and of civic groups and private persons and organizations. The planning commission also shall cooperate and confer with, and upon request supply information to federal, state, municipal and other local governmental agencies and, so far as possible, cooperate with planning agencies of adjoining areas on matters of mutual interest relevant to its activities. Whenever such cooperation or assistance includes the rendering of technical services, such services may be rendered free or in accordance with an agreement for reimbursement.
Okla. Stat. tit. 19, § 865.56