While surveying the internet for new sources of information IRT the Battle of Shiloh, I ran across a website for the auction house, Nate D. Sanders. It appears a collection of letters, books, CDV's and etc. "from the estate of D.W. Reed-- Father of Shiloh NMP" went up for auction recently... and the collection (which included letters written by CSA Officer Marshall J. Smith to Colonel Preston Pond, and General Daniel Ruggles to General Braxton Bragg -- both letters shown on website) was sold on November 29th 2016 for $14,000.
Would have made someone a great Christmas gift...
Ozzy
Nate D. Sanders auction website: http://natedsanders.com/blog/2016/11/shiloh-letter/