Columbia subject headings:
Harvard subject headings:
Tlaxcala (Mexico : State)--History--19th century--Sources.
Tlaxcala (Mexico : State)--Politics and government--19th century--Sources.
Princeton subject headings:
Tlaxcala (Mexico : State)--History--19th century--Sources.
Tlaxcala (Mexico : State)--Politics and government--19th century--Sources.