Maynard Dixon, Edge of the Amargosa Desert, 1927 Oil on canvas, 15 x 19 in. From images created by travelers and explorers to Romantic landscapes and scenes depicting the American West, the Sierra Nevada/Great Basin Collection surveys the art of our region, allowing NMA's audience the opportunity to explore their visual heritage. With this collection, the museum documents how artists have interpreted the landscape over the past 150 years through the works of Timothy O'Sullivan, John Henry Hill, Maynard Dixon, Carleton E. Watkins, and Edward Weston.