Columbia subject headings:
Architecture--Spain--San Ildefonso.
Art, Spanish--New Mexico--San Ildefonso Pueblo--17th century.
Palaces--Spain--San Ildefonso.
San Ildefonso (Spain)
Harvard subject headings:
Architecture, Baroque--Spain--San Ildefonso.
Palacio Real (San Ildefonso, Spain)
San Ildefonso (Spain)--Buildings, structures, etc.
Princeton subject headings:
Palaces--Spain--San Ildefonso--History.
Palaces--Spain--San Ildefonso--Pictorial works.
San Ildefonso (Spain)--Buildings, structures, etc.
San Ildefonso (Spain)--History.
San Ildefonso (Spain)--Pictorial works.