With more than two hundred photographs, this is a collection of Ansel Adams' photographs of America's national parks and wilderness areas. For many people, Yosemite, Yellowstone, Glacier National Park, and other American wildlands exist in the mind's eye as Ansel Adams photographs. The photographer explored more than forty national parks in his lifetime. Adams also helped preserve additional natural areas and protect existing ones through his photographs, essays, and letter-writing campaigns. Edited and with commentary by Andrea G. Stillman, this publication includes quotations by Adams on the making of numerous photographs, an essay by journalist and photography critic Richard B. Woodward, and a selection of additional writings on Adams, photography, and the environment.