Any municipality or public utility commission desiring to reproduce by microfilm, photograph, photostat or other process, the records of municipal system or systems under the authority granted in Section 21-27-93 are authorized and vested with the authority to purchase or acquire any equipment, materials and supplies necessary therefor, or to contract for the reproducing of said records in accordance with Section 31-7-1 et seq. Any such contract shall not exceed a period of twelve (12) months.