After World War II, Americans visited the national parks in unprecedented numbers, yet funding remained at prewar levels and park conditions steadily declined. In 1956 a ten-year billion-dollar initiative titled "Mission 66" was launched to reimagine the National Park Service. Environmental and park historians, architectural and landscape historians, and all who care about our national parks will enjoy Ethan Carr's copiously illustrated history of a critical period in the development of the national park system.