Columbia subject headings:
Harvard subject headings:
Grey, Zane, 1872-1939--Journeys--Pictorial works.
Novelists, American--20th century--Biography--Pictorial works.
Voyages and travels--Pictorial works.
Princeton subject headings:
Grey, Zane, 1872-1939--Travel--Pictorial works.
Novelists, American--20th century--Biography--Pictorial works.
Voyages and travels--Pictorial works.