Columbia subject headings:
Archives--Mexico--Mexico (State)--Directories.
Mexico (Mexico : State)--Archival resources--Directories.
Harvard subject headings:
Archives--Mexico--Mexico--Directories.
Mexico (Mexico : State)--Archival resources--Directories.
Mexico (Mexico : State)--History, Local--Sources--Bibliography--Catalogs.
Princeton subject headings:
Archives--Mexico--Mexico--Directories.
Mexico (Mexico)--Archival resources--Directories.