We have several things at the battlefield that might be of help, an article from the Sunny South (1897) "Chickamauga Heroism: The Part Taken in that Sanguinary Struggle by the 25th Arkansas-Death Blow to the Confederacy, After Which Her Loyal Sons Fought Without Hope", and an account from the Wilmington (NC) Daily Journal about McNair's brigade. Contact me if you would like a copy.

Lee