February 1862- While encamped at Cove Creek, Arkansas, the Missourians received their first "real" uniforms since enlistment in the Confederate Service. The uniforms received were undyed, white in color, and still smelling of their previous 4-legged owners.

April 1862- There's a reference to the 3rd Mo. being rested and refitted while at Corinth, MS. Unfortunately there's is no specifics given to what the refitting entailed. It can be speculated that at this point those who were in need of clothing might have been re-issued at this point by the various Christian and/or Ladies Aid Societies that were springing up all over the south.

October 20th 1862- This reference is made 16 days following the Battle of Corinth but is used to illustrate probable uniform sources the men of the 3rd MO. would have had available to them while stationed in northern Mississippi. While stationed at Camp Pritchard near Holly Springs, the men of the 3rd received new uniforms to replace their ragged and soiled uniforms by the Dixie Daughter's Society. The men upon being reissued were described as looking "more like civilians than soldiers".

There are two other occasions in which the men of the 3rd MO. might have been able to supply themselves via battlefield acquisition.

March 1862- Battle of Elkhorn, Arkansas
September 1862- Battle of Iuka, Mississippi

Based upon the above information, the impression guidelines for the 3rd MO. are as follows:

Headgear:
Civilian Slouch Hat, Wheel Cap, Mechanics Cap and non-descript kepi.  

Jackets:

Preferred- Undyed Penitentiary Cloth jacket of jean wool or cotton. Civilian Sack Coat or Frock Coat of wool, jean cloth, or linen. 
Acceptable- Non-descript commutation jackets & military frock Coats. 

*note*- No Columbus Depot jackets. The earliest reference to being issued this style of jacket occurs in January 1863 (well after the Iuka-Corinth Campaign) when a veteran mentions that the Missourians received their first genuine Confederate uniform and described as thus "Gray pants, gray jacket and gray caps. The collar and cuff on the jackets are trimmed with light blue".

Overshirt:
Civilian style.  
 
Trowsers:
Preferred: Undyed penitentiary cloth of either jean cloth, kersey, or cotton. 
Civilian Pattern- All wool, denim, broadcloth, linen or jean cloth. Any color of grey, butternut, or blue would be appropriate. 
Communtation style w/side-seam or mule-ear (cloth-dyed or undyed cotton jean or wool jean). 

Shirts:
Preferred: Civilian Style of solids, checks or stripes
Acceptable: Confederate Quartermaster plain osnaburg 

Shoes:
Preferred: Civilian Style shoe or work boot & Confederate Issue
Acceptable: Federal Issue (limited please) 

Socks:
Period correct wool or cotton 

Drawers:
Civilian
Imported 

Cartridge Box:
Preferred: Markings with the firm of Magee & George
Acceptable: US Pattern 1839 .69 cal. Box, Confederate unmarked .69 cal. Box, or Confederate unmarked .58 cal box., US Pattern 1857 in    either .69 cal. or .58 cal. 

Cap Pouch:
Preferred: Magee & George, Generic (unmarked) Confederate box, Confederate shield-front box
Acceptable: M1850 shield-front Federal pouch 
 
Scabbard:
Preferred: Magee & George, Confederate manufactured scabbard
Acceptable: Federal 2-Rivet 

Waist Belt:
Magee & George with correct "CS Regulation" Plate
Civilian Roller Buckle
Forked Tongue Buckle
Georgia Frame Buckle
Tin Sheet Iron Buckle
Sheet Brass Buckle 

Haversack:
Plain haversack of drill, ticking, or jean cloth 

Canteen:
Preferred- Tin Drum, Wood Canteen.
Acceptable- M1858 smoothside (with cover) (limited please)

Knapsack:
Mexican War pattern
Milita Style Hardpack 

Blanket:
Preferred- Civilian style coverlet, Civilian style panel blanket, Period correct quilt, or carpet.
Acceptable- 1851 US Regulation Blanket (limited please)

Groundcloth:
Painted
Oilcloth 
Civilian floor covering
Linseed oil
Acceptable-Federal Issue ground cloth

Weapons:
Preferred: Old Military muskets (converted .69 cal. weapons), 1842 smoothbores and Mississippi Rifles.
Acceptable- 1853 Enfield and 1861 Springfield  
 
Bayonet:
Socket type made for the musket being carried.