Maine Adjutant General's Annual Report for 1863, Appendix D, p. 151: Return of Co. I, 3rd Maine Infantry (Joseph O. Evans, discharged Dec. 26, 1862). Evans Joseph O, 20, Somerville, discharged for disability Dec. 26, 62.
Image · dated 1863 · source: Internet Archive (public-domain scan or U.S. government publication); annualreportofad1863main.

How it is shown: Complete page as scanned; no crop, no retouch.
Keep in mind: A printed official report, not the original muster roll or return.