Butch,all the other guys replies may be right on,but my guess,since it's in OK.,that it could be eastern red cedar,which is a very tough wood,and also makes strong,heavy spined arrows.I live in E. Texas,but many old home places around here have used ERC in construction,especially porch posts.I still see some trees in the 60' range that are straight,both the bark,and the trunk itself,and the bottom limbs 20'-25' from the ground,which would make for a very clean piece of timber. God Bless, Pete C