I think the muster rolls answer a question that I at least have struggled with for a while, separating Coleman's Missouri Cavalry Regiment from te 46th Arkansas Cavalry/Crabtree's Regiment. Coleman was the original Colonel of the 46th, but his post war accounts and things written by Bruce Allardice and Bruce Nichols have convinced me that he left Crabtree in command, went to Missouri and reorganized his old regiment. I believe that when we find Coleman mentioned in the ORs during Price's Raid, it is this second command, and not the 46th Arkansas that is being reported on. My best guess is that Crabtree was with McCray's Brigade in Fagan's Division for the entire Raid.
Included in Jeff Thompson Papers are muster rolls from both Coleman's Missouri Cavalry Regiment and Crabtree's Arkansas Cavalry. It seems clear that despite Coleman's association with both, there were two separate regiments.