Mo. Rev. Stat. § 492.490
The officer named in the commission may issue a subpoena to such witnesses, requiring them to appear and testify at a time and place therein named, and may enforce obedience thereto by attachment.
(RSMo 1939 § 1960)
Prior revisions: 1929 § 1796; 1919 § 5483; 1909 § 6426