The national parks: America's best idea

[Disc 1] Episode one. The scripture of nature (1851-1890)

[Disc 2] Episode two. The last refuge (1890-1915)

[Disc 3] Episode three. The empire of grandeur (1915-1919)

[Disc 4] Episode four. Going home (1920-1933)

[Disc 5] Episode five. Great nature (1933-1945)

[Disc 6] Episode six. The morning of creation (1946-1980).