All contracts made by any civil township officer or supervisor, in his capacity as such officer, except contracts made at a regular or special meeting of the civil township board, shall be deemed unlawful and not binding upon such civil township.

Source: SL 1897, ch 40, § 1; RPolC 1903, § 1066; RC 1919, § 6087; SDC 1939, § 58.0504.