Columbia subject headings:
Agriculture--United States--History.
Farms, Small--United States--History.
Food industry and trade--United States--History.
Harvard subject headings:
Agriculture--United States--History
Farms, Small--United States--History.
Food industry and trade--United States--History
Princeton subject headings:
Agriculture--United States--History.
Farms, Small--United States--History.
Food industry and trade--United States--History.