Columbia subject headings:
Landscape photography.
O'Sullivan, Timothy H., 1840-1882.
Photography, Artistic.
West (U.S.)--Pictorial works.
Harvard subject headings:
Landscape photography--West (U.S.)
Landscape photography.
O'Sullivan, Timothy H., 1840-1882.
Photography, Artistic.
West (U.S.)--Pictorial works.
Princeton subject headings:
Landscape photography.
O'Sullivan, Timothy H.
Photography, Artistic.
West (U.S.)--Pictorial works.