Not even a guess there?
Where is the picture of this Wilson person?
Many photos of the south face of the TSBD show Stephen Wilson standing behind the second window from the east corner on the third floor of the TSBD. He's not there in the Powell photo but he is there in the Dillard photos.
Powell said that he took his photo AFTER the Dillard photo..... And Wilson said that he got up and stood behind the window for at least 15 minutes after the first shot. Therefore IF Powell took his photo AFTER Dillard then Wilson should be seen in the Powell photo. ( But he's not there)
Furthermore Mr Wilson told Doris Burns that there had been a shooting, and a man had been hit, when she entered his office immediately after the first shot was fired......
But Wilson said that a tree blocked his view of the President's Lincoln so he couldn't have been referring to "a man" in the Lincoln when he told Ms Burns that there had been a shooting.