“I present to you, the people of the County of St. Louis, your own, this large and beautiful Forest Park for the enjoyment of yourselves, your children and your children’s children forever . . . The rich and poor, the merchant and mechanic, the professional man and the day laborer, each with his family and lunch basket, can come here and enjoy his own . . . all without stint or hinderance . . . and there will be no notice put up, ‘Keep Off the Grass.”