Guess nobody lives up there ( except you of course )...there have been other similar querries over the yrs in the mssg bd. You might get some helpfull clues from
some past posts.
Try different clue words in that "search" space at the top ...As a get started example, try "NORTH TEXAS"
D.J., Grayson County and all of the Red River country just north of you is rich in Indian culture going back for thousands of years. Odneal Springs near the intersection of Odneal Street and Branch Street in Sherman was the site of an ancient camp as was Post Oak Springs just NW of town. A visit to the "Arrowhead Museum" at Tishomingo would give you a good idea of what type points you could expect to find in your area. Many of the ancient camps along the Red River are now under the waters of Lake Texoma. The lake level is about normal right now but when the lake is low any sandbar below the SE slope of a hill could be a good place to look. If you are really interested do some homework and some leg work. look at the Google map of the Lake Texoma area.......see those islands in the lake, see those cultivated areas along the Red River upstream from the lake? Delaware Bend on the lake and Shawnee Creek below the spillway sure weren't named after Irishmen.
I lived in Denison for about 6 years. Found quite a few points in and near the feeder creeks that run into the Red River. Found alot of points on the Oklahoma side in cultivated peanut fields near Colbert,OK. And Lake Texoma has tons of points. I found several Perds believe it or not on the Oklahoma side of Lake Texoma on the beach right by the Park by the dam. Once dug a spot on private land near Sowell Creek about 2 miles from the Lake that had a ton of points. This area is kind of a transitional zone. You find alot of points you would normally find in East Texas, i.e. Scottsbluff Dalton, etc., as well as points normally found in Central Texas. Intersting area. Most of the surface camps you will find are Henrietta Focus type camps with mainly bird points. If you can get some private land access near the Lake Texoma, where there is a creek you are in business. Do some digging and looking where two waterways converge.
There is a park and school near an Elementary School in South Sherman, that I cannot remember the name of. Found a few points there, and some of the coolest shark's teeth you have ever seen. Happy Hunting.