Upon the official certificate of the trustees of the state department of archives and history that any abandoned cemetery is of historical significance and should be repaired, rehabilitated, or maintained as a historical monument, the boards of supervisors of the respective counties in this state are hereby authorized and empowered, in their discretion, to repair, rehabilitate, and maintain any such cemetery within the borders of the county over which such board has jurisdiction.
Subject to like certificate from the said trustees, the board of supervisors in adjoining counties may, in their discretion, jointly accomplish such repairs, rehabilitation, or maintenance in those instances where the cemetery in question occupies territory which at one time or another was located as a part of said adjoining counties.