Mo. Rev. Stat. § 477.150

A majority of the judges of any district of the court of appeals is hereby authorized to purchase the necessary textbooks and digests for the use of the judges in the conduct of their duty and to procure for a like purpose such law journals and periodicals as they may deem necessary; which expenditures shall be paid out of the state treasury, on certificate of the chief judge of the district to the commissioner of administration, and a warrant shall be drawn therefor on the state treasurer.