Here are some references that may help:

Sikakis, Stewart, Compendium of the Confederate Armies, Florida and Arkansas, Facts on File, Inc., 1992, ISBN 0-8160-2288-7 National Park Service, Civil War Soldiers and Sailors System Edward G. Gerdes Civil War Home Page
The List needs to be improved by adding at least one reference for each unit on the list.

Edward G. Gerdes Civil War Home Page

Col. John M. Harrell, "Confederate Military History, a library of Confederate States", Military History: Volume 10.2, Arkansas Clement Anselm Evans, Ed.

Hempstead, Fay, "A Pictorial History of Arkansas" St. Louis and New York, N. D. Thompson publishing company, 1890, Call number: 9197481

Kie Oldham Papers, Arkansas History Commission, One Capitol Mall, Little Rock Arkansas Arkansas Military Department Records, List of Commissioned Officers in State Militia 1827–1862, Microfilm Roll 00000038-8

Militia Law of the State of Arkansas, Published by direction of the Commander in Chief of the Army of the State of Arkansas and the Militia thereof

Dedmondt, Glenn, "The Flags of Civil War Arkansas", Pelican Publishing, 2009 Uniforms.

Ron Field, Richard Hook, :The Confederate Army 1861-65 (4): Virginia & Arkansas", Osprey Publishing, 2006 Coypediting.