Columbia subject headings:
Hidalgo (Mexico : State)--History--Sources.
Mexico (Mexico : State)--Politics and government.
Mexico--Administrative and political divisions.
Harvard subject headings:
Constitutional history--Mexico--Hidalgo (State)--Sources.
Hidalgo (Mexico : State)--History--Sources.
Princeton subject headings:
Constitutional history--Mexico--Hidalgo (State)--Sources.
Hidalgo (Mexico : State)--History--Sources.