Jim, see Major-General Hindman's report, dated Headquarters First Corps, Trans-Mississippi Army, Camp near Fort Smith, Ark., December 25, 1862 -- "Of all the troops engaged on our side, Adams' Arkansas regiment alone dishonored itself...." -- and continues on in some detail. If I recall correctly, this report is part of the Official Records.
There are also some references in the Supplement to the Official Records; also in "Embattled Arkansas: The Prairie Grove Campaign of 1862," by Michael Banasik. Note: In these two sources, the name of the color-sergeant who rallied a contingent of Adams' men is unfortunately mis-transcribed as John Howarter -- this man was actually Sergt. John Howerton.
There are also references in a couple of soldiers' letters, and in the "Autobiography of Pleasant Houston Spears," who deserted from Adams' regiment just before Prairie Grove and joined the Union army.
If you'd like, I'll transcribe the information I have and post it on this board. Give me some time, though, I have a few other irons in the fire at the moment.