Sorry, I haven't looked at this post in many years ago when I was deep into the research. I have transcribed copies of the three letters from John C. Applewhite to his sister-in-law, Susan Scott Applewhite, wife of Jesse Applewhite. John C. wrote two letters regarding Gettysburg and one letter from Petersburg. He witnessed the mine explosion and was very descriptive. My new email is kimbelldonald49@gmail.com. I can pdf you copies of the letters. Donald Kimbell