Columbia subject headings:
Hay, William, 1816-1908.
Legislators--Australia--New South Wales--Biography.
Harvard subject headings:
Hay, William, 1816-1908.
Legislators--Australia--New South Wales--Biography.
Princeton subject headings:
Hay, William, 1816-1908.
Legislators--Australia--New South Wales--Biography.
New South Wales. Parliament--Biography.