The memorial is shaped like a cone with two sections , the bottom of which commemorates Robertson 's wife , while the top half commemorates Robertson himself .
Architect John Horbury Hunt 's last commission was a memorial to Sir John Robertson , former Premier of New South Wales .
The memorial is shaped like a cone with two sections , the bottom of which commemorates Sir 's wife , while the top half commemorates Sir himself .
Architect John Horbury Hunt 's last commission was a memorial to Sir John Robertson , former Premier of New South Wales .