Study I for a Mural  1969

Study for Waiting for the Train  1969

Second Study for Ostia  1969

Study for The Discussion  1969

Study for Jacob Descending  1979

Study for The Bus Stop  2009

Study for the Yellow Truck 

Second Study for Monument and Car Park 

Study for Motel Swimming Pool 

Study for Prudhoe Bay Landscape  1974

Study for Satellite Receiver  1974