I came across a page on the web that was written by a Dr. Doug Foster. He is a 3rd or 4th cousin on my mother’s side of the family, but I have never met him. He had also done some research on our great, great grandfather and had posted his paper on a genealogy web site. It was in this paper that he mentioned Dr. Tyson’s report on John N. Foster’s wounds. I have tried to contact him by an email link on that web page, but it came back as undeliverable. Below is the link to his article, if you would like to read it. Hope this will help your research.