Ken,
From the allotment map that Humphrey Colbert roll # 13 of the Chickasaw Nation, which he choose, as this had been on his farm family farm in his youth,{with mother,father}he
asked to be buried beside his father Winchester Colbert-- at this old Colbert family farm.
(likely owned all of this section #12 at the time of Civil War.)

Humphrey Colbert Dawes Indian Allotment
location: Pontotoc Co.Ok.
Upper right hand section of # 12 N.E.140 Ac.T2N 6E Pontotic Co.
Lower/S.W.and S.E section # 12- 110 Ac.T2N 6E Pontotic co.
Map-General -At the head waters/springs of clear boggy creek and along this creek to the mouth of Boggy river and Bois 'd' Arc Creek.

From this Clear Boggy Springs farm the Colbert Institute-Sec 11-T2N 6E was about one half miles away it also was (Vol 15 pg 417 O.H.S.)Compelety burned /destroyed also,there is a common road.It is also a fact that my other Gf was killed R.L. Cochran in this same area(At his house) and time period you are looking at.
The 1860 slave census -coded-show they next door lived as a neighbors-sequence
The Chickasaw nation Deptment of Libraries Archives & Collections,manager of genealogy
Archives center-Tishimingo Oklahoma--73460-Fax 530-371-0374

As you know I have hunted for years -Via my Gf's-locations ,events,etc,I now feel that this is the correct farm site/that the Chickasaw Nation got it right-- and I all the faith in
the Indian Colbert line being researched by them--they also stated he and his son had been there before/durning- the Civil War.

It is possible that Colbert mill was at the end of his Clear Boggy Creek, but there is no record known of this being a mill -site/however one grist-mill did exisit at Sheep Creek & Clear Boggy River.
i'm sure it got destroyed.
Cheers