REMOVE

1. Sculpture
2. North American; Canadian
3. 1968

WHAT

1. 67 aluminum plates on ste … (1)
2. aluminum with enamel (1)
3. fibreglas-reinforced plas … (1)

WHERE

1. North American; Canadian (3)

WHO

1. National Gallery of Canad … (3)
2. Comtois, Ulysse (1)
3. Murray, Robert (1)
4. Zelenak, Ed (1)

WHEN

1. 1967 (1)
2. 1967-1968 (1)
3. 1968-1969, final version … (1)
4. 1969 (1)