Columbia subject headings:
Gulf States--Antiquities--Congresses.
Indians of North America--Gulf States--Antiquities--Congresses.
Indians of North America--Southern States--Antiquities--Congresses.
Southern States--Antiquities--Congresses.
Harvard subject headings:
Gulf States--Antiquities--Congresses.
Indians of North America--Gulf States--Antiquities--Congresses.
Indians of North America--Southern States--Antiquities--Congresses.
Southern States--Antiquities--Congresses.
Princeton subject headings:
Gulf States--Antiquities--Congresses.
Indians of North America--Gulf States--Antiquities--Congresses.
Indians of North America--Southern States--Antiquities--Congresses.
Southern States--Antiquities--Congresses.