Historical marker unveiled Monday at Old State House Museum LITTLE ROCK, Ark. – There was a nod to the past, while looking ahead to the future, at the Old State House Museum on Monday morning, with the unveiling of a historical marker. The marker is one of 11 that the Arkansas250 Commission has decided should be placed at significant locations as the country celebrates its semi-quincentennial. The ceremony had Gov. Sarah Huckabee Sanders thinking back over the Natural State's rich story.