The letter is in his CMSR. You can always order copies of his CMSR/and or pension files through this site.

Click here:

http://history-sites.com/research/confedrecs.html

The letter appears to be written by one of his commanders.....the only words I can make out in the body of the letter are "Lt. ??'s Company E of ? fith Regiment Alabama".
His descriptive roll is also hand written, and there are payment records to his widow.