Restrictions on the summoning of officers and servants of the Board or Planning Authority

No Chairman, Secretary, Member, officer or servant of the Board or Planning Authority, shall, in any legal proceedings to which the Board or the Planning Authority is not a party, be required to produce any register or document the contents of which can be proved under section 66 by a certified copy, or to appear as a witness to prove the matters and transactions recorded therein, unless, by order of the court, made for special cause.