Dyer's Compendium lists the following information:
Phelps' Regiment, Missouri Infantry (6 months, 1861)
Organized at Rolla, Mo., September 22 to December 27, 1861. Served unattached, Army of Southwest Missouri, to February, 1862. 2nd Brigade, 4th Division, Army of Southwest Missouri, to May, 1862.
SERVICE.-Duty at Rolla, Mo., till February, 1862. Curtis' Campaign against Price in Missouri and Arkansas February and March. Actions at Sugar Creek and Bentonville February 17. Battles of Pea Ridge, Ark., March 6-8. Mountain Grove March 9. Mustered out May 13, 1862.
Lost 2 Officers and 23 Enlisted men killed and 3 Officers and 91 Enlisted men by disease. Total 119.