February 2, 2012
"Lying out at night under those giant sequoias was lying in a temple built by no hand of man, a temple grander than any human architect could by any possibility build, and I hope for the preservation of the groves of giant trees simply because it would be a shame to our civilization to let them disappear. They are monuments in themselves."

— President Theodore Roosevelt, in a speech given days after his private tour of Yosemite led by John Muir.

January 27, 2012
Park Dedication Ceremony, 1929. Grand Teton National Park, Wyoming.

Park Dedication Ceremony, 1929. Grand Teton National Park, Wyoming.

January 25, 2012
Park rangers, 1940. Bryce Canyon National Park, Utah

Park rangers, 1940. Bryce Canyon National Park, Utah

January 22, 2012
Senator Carl Hayden and Park Superintendent John McLaughlin, 1958. Grand Canyon National Park, Arizona

Senator Carl Hayden and Park Superintendent John McLaughlin, 1958. Grand Canyon National Park, Arizona

January 18, 2012
Park Naturalist Edwin McKee and tour group, 1932. Grand Canyon National Park, Arizona.

Park Naturalist Edwin McKee and tour group, 1932. Grand Canyon National Park, Arizona.

January 12, 2012
Staff Photo, 1940. Acadia National Park, Maine

Staff Photo, 1940. Acadia National Park, Maine

January 9, 2012
Albert Einstein and his wife, 1931. Petrified Forest National Park.

Albert Einstein and his wife, 1931. Petrified Forest National Park.

December 27, 2011
Theodore Roosevelt and John Muir on Glacier Point in Yosemite National Park, California 1906
To Roosevelt’s right is the Upper and Lower Yosemite Falls.

Theodore Roosevelt and John Muir on Glacier Point in Yosemite National Park, California 1906

To Roosevelt’s right is the Upper and Lower Yosemite Falls.