Columbia subject headings:
Agriculture and state--Minnesota--History--19th century.
Agriculture--Economic aspects--Minnesota--History--19th century.
Disaster relief--Minnesota--History--19th century.
Rocky Mountain locust--Minnesota--History--19th century.
Harvard subject headings:
Agriculture and state--Minnesota--History--19th century.
Agriculture--Economic aspects--Minnesota--History--19th century.
Disaster relief--Minnesota--History--19th century.
Rocky Mountain locust--Minnesota--History--19th century.
Princeton subject headings:
Agriculture and state--Minnesota--History--19th century.
Agriculture--Economic aspects--Minnesota--History--19th century.
Disaster relief--Minnesota--History--19th century.
Rocky Mountain locust--Minnesota--History--19th century.