Thanks George but the family surname was not Baldwyn or anything near that name but only had the envelope addressed to the town of Baldwyn but not the same spelling.
I checked with Grady and he and others don't have any knowledge of the town being spelled in any other ways.
Although I believe I know who the family was who never received the letter I can't even say anything to the possible descendants without violating the owners trust.
It's also plausible these letters were censored and never had a chance to even get into Mrs. Clark's mailbag of missing letters.
I did run across a civilian from West Virginia who was a political prisoner at Camp Chase. He wrote 80 letters home to his wife. He would number the letters 1 through 80 but did not number them in an obvious way. If his wife for example did not receive letter number 7 she would write back and say something like we lost 7 chickens last week mixed in with other information. In this way he would know letter number 7 had been censored and she never had received it. He would survive the war and continued his occupation as a doctor. One of his patients after the war was the wife of former General Robert E. Lee.