The Confederate Order of Battle for Wilson’s Creek is found at:
http://en.wikipedia.org/wiki/Wilson's_Creek_Confederate_order_of_battle

…….

The Missouri State Guard under Maj. Gen. Sterling Price included in it’s organization the Sixth Division comprised of the state’s Sixth District containing the counties of: Saline, Pettis, Cooper, Moniteau, Cole, Osage, Gasconade, Maries, Miller, Morgan, Camden, Pulaski, and Phelps. This division was commanded by Brig. Gen. Mosby M. Parsons

Mosby’s Sixth Division at Wilson’s Creek consisted of these elements:
BG Mosby M. Parsons

Kelly’s Infantry: Col Joseph M. Kelly
Brown’s Cavalry: Col Ben Browne
Guibor’s Battery: Cpt Henry Guibor, Lt William P. Barlow

[Note, I have not been able to identify any rosters of the above units in on-line sites. Perhaps the State Archives might hold them]

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General Price’s after action report is found in the Official Records, V. 3, starting on page 98, ending on page 102:

[http://ehistory.osu.edu/books/official-records/003/0098]

Numbers 19. Report of Major General Sterling Price, commanding Missouri State Guard, of operations from July 25 to August 11.

HEADQUARTERS MISSOURI STATE GUARD,

Springfield, Mo., August 12, 1861.

SIR: I have the honor to submit to your excellency the following report of the operations of the army under my command at and immediately preceding the battle of Springfield: . . .

[on page 101]

“ . . . General Parson's brigade, 256 infantry and artillery, under command, respectively, of Colonel Kelley and Captain Guibor, and 406 cavalry, under Colonel Brown, lost, the artillery, 3 killed and 7 wounded; the infantry, 9 killed and 38 wounded; and the cavalry, 3 killed and 2 wounded. Colonel Kelly was wounded in the hand. Captain Coleman was mortally wounded, and has since died. . . . “

See pp. 34- for Numbers 11. Report of Brigadier General Monroe M. Parsons, commanding Sixth Division Missouri State Guard.

HDQRS. 6TH DIV. MO. S. G., 1ST DIV. ARMY CORPS,

Camp on Cowskin Prairie, July 10, 1861.

SIR: I have the honor to report to you the movements of my division in front of the enemy on the 4th and 5th instants.
About 6 o'clock in the evening on the 4th of July I received intelligence from my quartermaster, Colonel Monroe, whom I had sent forward with an escort of 95 men to take possession of the mills near Carthage, that the enemy were in strong force in that vicinity, and the colonel demanded of me immediate relief. . . . .
http://ehistory.osu.edu/books/official-records/003/0034