Mo. Rev. Stat. § 34.160

34.160. Commissioner not to be interested in concern making bids for furnishing supplies or printing — penalty for violation. — The commissioner of administration shall not be interested in any manner in any person, firm or corporation making bids for furnishing supplies or printing to the state or any subdivision or department thereof. He shall not receive nor accept, directly or indirectly, from any person, firm or corporation who may bid for furnishing, or receive a contract to furnish, any supplies or printing of any kind to the state, any rebate, gift or other valuable thing. Acceptance of any such rebate, gift or other valuable thing by the commissioner of administration shall be deemed a felony and on conviction thereof he shall be punished by imprisonment in the state penitentiary for not less than two nor more than five years, or by fine of not less than five hundred dollars nor more than two thousand dollars, or by both such fine and imprisonment.

(RSMo 1939 § 14589, A.L. 1945 p. 1428 § 63)