Mo. Rev. Stat. § 534.100
534.100 Return of officer.
534.100. Return of officer. — The officer shall, on or before the trial day, return the summons and certify thereon, or annex thereto, how he executed it.
(RSMo 1939 § 2839) Prior revisions: 1929 § 2453; 1919 § 3001; 1909 § 7663