You might like Left Right Eight Red Arcs Gordon House 1964 Dial Set Four Gordon House 1966 Red Matrices Gordon House 1967 4 Blue Arcs Gordon House 1967 4 Red Arcs Gordon House 1967 Multi/Screen Gordon House 1969 Arc B Gordon House 1971 Arc D Gordon House 1971 Red Quarter Arc Gordon House 1971 Triangle A Gordon House 1971 Triangle F Gordon House 1971 Amsterdam B Gordon House 1971