Columbia subject headings:
Photography of railroads--Mexico.
Prints, Mexican--19th century.
Railroads in art.
Railroads--Mexico--History--Pictorial works.
Harvard subject headings:
Photography of railroads--Mexico.
Prints, Mexican--19th century.
Railroads in art.
Railroads--Mexico--History--Pictorial works.
Princeton subject headings:
Photography of railroads--Mexico.
Railroad trains--Pictorial works.
Railroads--Mexico--History.
Railroads--Mexico--Pictorial works.