Please consider donating photo copies and transcriptions of the letters along with biographical information on your ancestor to the state archives in both Alabama and Mississippi. Years from now a researcher like me will connect the dots and possibly ensure that his final resting place is confirmed.
In any case the words of these men and their families should be shared, "Lest We Forget" their sacrifice.
7th Regt. Mississippi Infantry Historian
"Lest We Forget-The Immortal Seventh Mississippi"