Columbia subject headings:
United States--Politics and government--1845-1849.
Yucatán (Mexico : State)--History--Caste War, 1847-1855.
Yucatán (Mexico : State)--Politics and government.
Harvard subject headings:
United States--Politics and government--1845-1849.
Yucatán (Mexico : State)--History--Caste War, 1847-1855.
Yucatán (Mexico : State)--Politics and government.
Princeton subject headings:
Indians, Treatment of--Mexico--Yucatán (State).
Yucatán (Mexico : State)--History--Caste War, 1847-1855.
Yucatán (Mexico : State)--Race relations.