Columbia subject headings:
Fountains--Mexico--Mexico City--Pictorial works.
Mexico City (Mexico)--Buildings, structures, etc.--Pictorial works.
Water-supply--Mexico--Mexico City--History.
Harvard subject headings:
Fountains--Mexico--Mexico City--Pictorial works.
Mexico City (Mexico)--Buildings, structures, etc.--Pictorial works.
Plazas--Mexico--Mexico City.
Water-supply--Mexico--Mexico City--History.
Princeton subject headings:
Fountains--Mexico--Mexico City--History.
Mexico City (Mexico)--Buildings, structures, etc.
Water-supply--Mexico--Mexico City--History.