Red and Green to Red and Blue; Takeover Movement: E (Study for Late Morning 2); sections used in images E F I K L & possible D

Bridget Riley (b. 1931) Red and Green to Red and Blue; Takeover Movement: E (Study for Late Morning 2); sections used in images E F I K L & possible D gouache and graphite on paper, on three overlapping sheets 6 x 67½in. (15.2 x 171.1cm.) Executed in 1967