Michelle - You would order their Compiled Military Service Records (CMSR). These are separate from pension records. Their CMSRs do contain contemporaneous (1863-1864) claims made for pay not received and for commutation allowances. The physical descriptions include height, complexion, hair and eye color. Since Mississippi did not start awarding pensions to indigent widows until 1888, I assume that what you have contains an application, affidavits, and supporting data for a pension.