Ansel Adams made this photograph of Maroon Bells in 1951, while traveling to one of the first meetings of the Aspen Institute, a gathering of intellectuals and artists set amidst Colorado’s natural beauty.

Ansel once wrote, “A true portrait should, today and a hundred years from today, be the testimony of how this person looked and what kind of human being he was.” Among the most striking of Ansel’s portraits is his 1937 photograph of Georgia O’Keeffe, an American icon who, like Ansel, needs no introduction.