Mary Martin 1907–1969 Permutation of Six 1966 © Estate of Mary Martin License this image Artworks Left Right Spiral Movement Mary Martin 1951 Spiral Mary Martin 1963 Inversions Mary Martin 1966 Black Relief Mary Martin 1957–c.66 Perspex Group on Orange (B) Mary Martin 1969 Perspex Group Mary Martin 1963 Expanding Form Mary Martin 1954 Permutation of Six Mary Martin 1966 See all 9