My research shows that in May, Burleson's company was camped at "Camp Beaver" on Home Creek in Coleman County. By May 10, McCord had returned from Austin after dealing with a delivery problem regarding the company's rations. Burleson sent him on a 5-day scout looking for Indians in the area, with orders for him to go to Fort Belknap when the scout was over. At Fort Belknap, McCord met up with Col. Johnson and the 5 ranger companies that had already gathered there for the big expedition.
Burleson's company was delayed in making the rendezvous at Ft. Belknap due to rainy weather and insufficient transportation. In early June, McCord was ordered to go into the town of Belknap to procure cheap transportation to get supplies north to Camp Radziminski. The campaign left for Radziminski between June 10-12. Burleson arrived at Ft. Belknap late on June 12, met with McCord and headed out immediately to catch up to the companies ahead of him. On July 3, Burleson had camped at a "mountain pass" near Radziminski and wrote to Gov Houston that he had sent McCord to see him... however, the details of that trip are unknown. Regardless, McCord was apparently back with the company on July 6 when they headed from Camp Radziminski to Fort Cobb to investigate reports of Reserve Indians depredating the frontier. On July 11, McCord was part of a detachment that visited Indian villages on the Reserve.
Burleson's company spent most of July camped at Otter Creek near Fort Cobb... then on July 31, left on a 30-day scout on Big Wichita River and through Double Mountains on his way back to Camp Beaver. They marched into San Marcos around 5 September and were mustered out 2 days later.
Neither the original roster for Burleson's company nor the mustering out roster show anyone named Guthrie. Also, the Lt. Carson you cite was not James. On the first roster, his name was Joseph (Jos.) Carson and he was 26 years old in 1860. He was listed as John Carson when the company mustered out.
A man whose life I'm researching was a member of Burleson's company in 1860... so I've tracked down every letter, order and news clipping I can find to piece together what happened to them that year. I don't know what roles Burleson and McCord had after September 1860 other than I know McCord joined Capt. Dalrymple's command at Ft. Belknap after Burleson's company disbanded.
Don