Columbia subject headings:
South America--Description and travel.
United States--Description and travel.
Harvard subject headings:
Leitner, Maria--Travel--North America.
Leitner, Maria--Travel--South America.
Leitner, Maria--Travel--United States.
South America--Description and travel.
United States--Description and travel.
Princeton subject headings:
South America--Description and travel.
United States--Description and travel.