There is a vast amount of information at the Texas Historical Society about the history of Polk County, how it was started and developed, etc.. I found it fascinating that this was once tribal land. ” Before European settlement, Polk County was inhabited by the Hasinai Indians, a loose alliance of Caddo descent. The Alabama and Coushatta Indians crossed into the Big Thicket, which covered much of the region, from Louisiana in the late eighteenth century. Unlike the Hasinais, they remained in the county, living on land given to them by the state of Texas in 1854. ” You can read more at this link: –> Texas Historical Society