In 1915, a series of important drawings by the then-unknown Georgia O’Keeffe fell into the hands of Alfred Steiglitz, which he included in a show the following year at his Gallery 291. By 1917 O’Keeffe had had her first solo exhibition at 291, and had joined the stable of artists supported and promoted by Stieglitz, including Charles Demuth, Arthur Dove, Marsden Hartley, and John Marin. In 1924, O’Keeffe married Stieglitz and showed annually at 291 until his death in 1946. In 1929, O’Keeffe made her first trip to Taos, New Mexico, and she would return annually until 1949, when she settled there permanently. Her paintings from this time are exceptional for their exploration of the natural terrain and, more importantly, the spiritual quality she found within it. A superb example of this investigation is Pink Hills, which, in a letter from 1976, O’Keeffe said was “painted from the red hills that are across the arroyo from where I’ve lived for 40 years.”