Here is a post from Bryan Howerton from the Archive with the details on Fagan's Division during Price's Raid.

The Arkansas in the Civil War Message Board - Archive

Re: Itinerary of Price's Army

Posted By: Bryan Howerton
Date: Thursday, 8 July 2004, at 6:51 p.m.

In Response To: Re: Itinerary of Price's Army (Ray Todd Knight)

Here's the composition of Fagan's Division, to which the Arkansas troops were assigned (the Missouri troops were assigned to Marmaduke's Division) --

Cabell's Brigade
4th Arkansas Cavalry -- Col. Anderson Gordon.
6th Arkansas Cavalry -- Col. James C. Monroe.
7th Arkansas Cavalry -- Col. John F. Hill.
8th Arkansas Cavalry -- Col. Thomas J. Morgan.
3rd Arkansas Battalion -- Lieut. Col. Thomas M. Gunter.
16th Arkansas Battalion -- Maj. James L. Witherspoon.
17th Arkansas Battalion -- Lieut. Col. John M. Harrell.
8th Arkansas Field Battery -- Capt. William M. Hughey.

Slemons' Brigade
2nd Arkansas Cavalry -- Col. William F. Slemons.
10th Arkansas Cavalry -- Col. William A. Crawford.
12th Arkansas Cavalry -- Col. John W. Wright.
Carlton's Arkansas Cavalry -- Col. Charles H. Carlton.

Dobbin's Brigade
1st Arkansas Cavalry -- Col. Archibald S. Dobbin.
10th Arkansas Mounted Infantry -- Col. Allen R. Witt.
44th Arkansas Mounted Infantry -- Col. James McGehee.
7th Arkansas Field Battery (section) -- Lieut. Jesse V. Zimmerman.

McCray's Brigade
45th Arkansas Mounted Infantry -- Col. Milton D. Baber.
46th Arkansas Mounted Infantry -- Col. William O. Coleman.
47th Arkansas Mounted Infantry -- Col. Lee Crandall.
15th Missouri Cavalry -- Col. Timothy Reves.

Unattached
23rd Arkansas Mounted Infantry -- Col. Oliver P. Lyles.
30th Arkansas Mounted Infantry -- Col. James W. Rogan.
Anderson's Arkansas Battalion -- Capt. William L. Anderson.