In 1941 the National Park Service commissioned noted photographer Ansel Adams to create a photo mural for the Department of the Interior Building in Washington, DC. The theme was to be nature as exemplified and protected in the U.S. National Parks. The project was halted because of World War II and never resumed. The holdings of the National Archives Still Picture Branch include 226 photographs taken for this project, most of them signed and captioned by Adams. They were taken at the Grand Canyon, Grand Teton, Kings Canyon, Mesa Verde, Rocky Mountain, Yellowstone, Yosemite, Carlsbad Caverns, Glacier, and Zion National Parks; Death Valley, Saguaro, and Canyon de Chelly National Monuments. Other pictures were taken at Boulder Dam, CO; Acoma Pueblo, NM; San Idelfonso, NM; Taos Pueblo, NM; Tuba City, AZ; Walpi, AZ; and Owens Valley, CA. Many of the latter locations show Navajo and Pueblo Indians, their homes and activities.