Columbia subject headings:
Biblioteca Francisco Xavier Clavigero--Catalogs.
Mexico--Description and travel--Catalogs.
Mexico--Pictorial works--Catalogs.
Postcards--Mexico--History--20th century--Catalogs.
Pérez Alonso,  Manuel Ignacio, 1916-2007--Art collections--Catalogs.
Harvard subject headings:
Biblioteca Francisco Xavier Clavigero--Catalogs.
Mexico--Description and travel--Catalogs.
Mexico--Pictorial works--Catalogs.
Postcards--Mexico--History--20th century--Catalogs.
Pérez Alonso,  Manuel Ignacio, 1916-2007--Art collections--Catalogs.
Princeton subject headings:
Catalogs.
Mexico--Description and travel.
Mexico--Pictorial works.
Pérez Alonso, Manuel Ignacio, 1917-2007--Art collections.
Postcards--Mexico--History--20th century.
Universidad Iberoamericana Ciudad de México. Biblioteca Francisco Xavier Clavigero--Catalogs.