The director shall have an official seal, and orders or other papers executed by the director may, under the director’s direction, be attested, with the seal affixed, by the secretary. [C31, 35, §6943-c25; C39, § 6943.024; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §421.15 ]