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Rocky Mountain National Park A photo of a research volunteer feeding a hummingbird.
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Rocky Mountain National Park
Trees Photo Gallery

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a photo of Elizabeth Burnell, the nation's first female nature guide

Did You Know?
Rocky Mountain National Park licensed the nation’s first female nature guides in 1917. Sisters Ester and Elizabeth Burnell learned the naturalist trade from advocate and author Enos Mills.

Last Updated: August 06, 2010 at 14:11 MST