The letter is a transcription from a (currenly unindexed) Confederate Veteran submittal by Slatter. It was recently found at the Columbus (Ga) library by the editor of my hometown newspaper who assumed it was something everybody already knew because it had been so easy for him to come across. He's going to go back and get Issue/Date.

Original, if it still exists, would be in Slatter's papers but I do not think anyone has pursued that avenue to see if there is such a collection any longer.