Columbia subject headings:
Harvard subject headings:
Irrigation--West (U.S.)--History--Pictorial works.
Reclamation of land--West (U.S.)--History--Pictorial works.
United States. Bureau of Reclamation--History--Pictorial works.
Water resources development--West (U.S.)--History--Pictorial works.
Princeton subject headings:
Irrigation--West (U.S.)--History--Pictorial works.
Reclamation of land--West (U.S.)--History--Pictorial works.
United States. Bureau of Reclamation--History--Pictorial works.
Water resources development--West (U.S.)--History--Pictorial works.