#7 "Round Mountain (Red Fork) -- November 19, 1861" is shown in Pawnee County in the Mannford-Westport area on the north side of the Cimmarron.
#8 "Twin Mounds -- 1865" is shown near Yale in Payne County.
The text on the page states "The first Civil War skirmish in Indian Territory occurred after nighfall on November 19. 1861, between Union Indian and Confederate Indian and Texas forces at Round Mountain, near the mouth of the Cimmarron River." I didn't see a description of the 1865 action near Twin Mounds but in Wright & Fisher's "Civil War Sites in Oklahoma", which is also in Vol. 44 (1966) of the Chronicles of Oklahoma they describe a fight between Indians and cattlemen (I don't recall any of the details of this fight. There are other stories of fights at Twin Mounds after the Civil War.).
Ken