This is what I found at this website---
Does this look like you man? I Checked Fold 3 and could not locate this man in the 2nd.
Pearson, W. W. Born: Nov 8, 1844 Pvt; Co. F, 36th MS Inf Cash Scott
Leake County, MS Enlisted: Feb 24, 1862 2.5 mi SE of Lena, MS
Died: May 10, 1889 Discharged: May 4, 1865 Private
Scott County, MS