Bridget Riley, Series 41 Red Added — Green and Violet, Blue and Yellow, 1979.
Courtesy of the artist
37. Series 41 Red Added — Green and Violet, Blue and Yellow
| Artist | Bridget Riley |
| Year | 1979 |
| Medium | Pencil and gouache on paper |
| Dimensions | 381/4 x 197/8 in. (97 x 50.5 cm) |
| Collection | Courtesy of the artist |