No record of a Richard Dean with the 11th Missouri Infantry.

Richard Dean, Company B, 6th Missouri Infantry, recorded on the May/Jun, 1863 muster roll as, absent, exchanged prisoner from Trans.-Miss. Department. Ordered to camp May 10, 1863, such at hospital, temporarily attached to the company, subsequently on the following muster roll, died since surrender of Vicksburg, belongs to Trans. Miss. Dept. temporarily attached to the Company, no other records

Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Missouri