Columbia subject headings:
Conservation of natural resources--Mississippi River Region.
Conservation of natural resources--Southern States.
Cultural property--Protection--Mississippi River Region.
Cultural property--Protection--Southern States.
Historic preservation--Mississippi River Region.
Historic preservation--Southern States.
Harvard subject headings:
Princeton subject headings:
Conservation of natural resources--Mississippi River Region.
Conservation of natural resources--Southern States.
Cultural property--Protection--Mississippi River Region.
Cultural property--Protection--Southern States.
Historic preservation--Mississippi River Region.
Historic preservation--Southern States.
Mississippi River Region--Description and travel.
Mississippi River Region--History.
Southern States--Description and travel.
Southern States--History.