This artist used sgraffito etching on gold leaf to reveal red oil paint imitating bole clay in the piece Friendship. To alleviate the difficulty of painting in old age, this artist reduced a favored canvas size of six-by-six squares to five feet. An octagonal room at SFMoMA (15[1])displays seven paintings (15[1])by this artist of a motif (-5[1])related to a “will to silence” in a Rosalind Krauss essay. The death of Ad Reinhardt prompted this artist to move from New York City to spend seven years on an isolated (*) mesa (10[1])not painting. (10[1])This artist of Night Sea and On a Clear Day (10[1])series names a gallery at the Harwood Museum of Art, near where she lived in Taos, New Mexico (10[1]-5[2])developing (10[1])a technique of subtle monochromatic coloration informed by Eastern spirituality. For 10 points, name this Canadian-American artist best known for untitled paintings of uniform (10[1])grids. ■END■ (10[1]0[1])