Columbia subject headings:
Slavery--Kansas--19th century--History.
Slavery--Missouri--19th century--History.
Harvard subject headings:
Kansas--Boundaries--Missouri--History.
Missouri--Boundaries--Kansas--History.
Slavery--Kansas--History.
Princeton subject headings:
Kansas--Boundaries--Missouri--History.
Missouri--Boundaries--Kansas--History.
Slavery--Kansas--History.
Slavery--Missouri--History.