White X Disc 1978

White X Disc (detail) 1978

White Disc 1978

White X 1977

White X (detail) 1977

White X 1978

Niner Disc 1978

Red X Barricade 1976

White Disc Interior 1978

Slot Disc Barricade 1978

Art Park Environment 1977

Car Park model 1973