Searching for letters, journals, and other personal documents referencing the life and military service of James Rowlett, a musically-inclined individual who served as a private in Company F of the 108th U.S. Colored Infantry. His last name is also spelled Roulett. He may be the brother of Jacob Rowlett, who served in the same company and regiment. James Rowlett filed for a government pension in 1886. Any and all help appreciated.