I think this Calvin C Brewer was the one that saw my 2ggrandfather John Orrick/Orick/Ark when he was at the hospital in Corinth MS after the Battle of Shiloh. 35th TN.

See this - page 3 where Brewer is mentioned:
http://www.arrick.com/family/files/manleywilsonstory.pdf

Would like to talk with you more about this if you're interested. Maybe there are some more clues.

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Roger Arrick
Roger@Arrick.com
Tyler, TX