Columbia subject headings:
Istanbul (Turkey)--Pictorial works.
Landscape photography.
Photographers--Turkey--Biography.
Photography--History--19th century.
Robertson, James, 1813-1888.
Turkey--History--Ottoman Empire, 1288-1918--Pictorial works.
Harvard subject headings:
Istanbul (Turkey)--Pictorial works.
Middle East--Pictorial works--19th century.
Photography--Turkey--History--19th century.
Robertson, James, 1813-1888.
Princeton subject headings:
Istanbul (Turkey)--Pictorial works.
Landscape photography.
Photographers--Turkey--Biography.
Photography--History--19th century.
Robertson, James, 1813-1888.
Turkey--Pictorial works.