As for the Hindman papers. They are focused primarily on events from the time of his taking command in August 1862 to his departure in March 1863. The reports that was written for the Battle of Prairie Grove have differences in them than what was published in the OR, plus the continuing drama between both Pike and Hindman are of interest, which are found in the LO books. But what I think would be of interest to many of the IT people is that at the end of August 1862 Hindman order a full accounting of every command. Those documents were in his Misc. File. Amazing stuff, in it are the returns for Coopers, Carroll's, Walkers, commands, which lay out how they were equipped, how much munitions were on hand, how many were unarmed (which were a very great many at that time) and how many wagons and their condition. I have those in one specific file. Its all part of the papers from the Peter Wellington Alexander Papers, but never so much as put together as a group, except in the sad way it was done in the supplement. There they picked what went into the books and left out far too much.
Send me your email address and I will forward by attachment. Be warned they are in Microsoft Works format but easily converted.