On December 29, 1863, Col. E.B. Alexander, Acting Assistant Provost Marshal General in St. Louis, writes to Capt. A. Comingo, Provost Marshal for the 6th District of Missouri, in Lexington, Missouri. Alexander acknowledges receipt of "the Oaths of Owen Doyle and James Powers on claim of Exemption," and states that the evidence required in these cases is "such as will satisfy" the Board of Enrollment.