Georgia O’Keeffe, Green Lines and Pink, 1919. Oil on canvas, 18 × 10 in (45.7 × 25.4 cm). Georgia O’Keeffe Museum. Gift of the Burnett Foundation and the Georgia O’Keeffe Foundation (1997.05.007). © Georgia O’Keeffe Museum. Georgia O’Keeffe, Green Lines and Pink, 1919. Oil on canvas, 18 × 10 in (45.7 × 25.4 cm). Georgia O’Keeffe Museum. Gift of the Burnett Foundation and the Georgia O’Keeffe Foundation (1997.05.007). © Georgia O’Keeffe Museum.