Mo. Rev. Stat. § 506.310
506.310 Secretary of state shall keep records.
506.310. Secretary of state shall keep records. — It shall be the duty of the secretary of state to keep a record of all process served upon him, or his chief clerk, under the provisions of sections 506.200 to 506.320 , which record will show the day and hour of service of every such process.
(L. 1941 p. 435 § 13)