Concept
Version 12
Created by Boundless
Environmental Protests
Roosevelt and Muir: Early Environmentalism
U.S. President Theodore Roosevelt and nature preservationist John Muir, founder of the Sierra Club, on Glacier Point in Yosemite National Park.
Source
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"Muir and Roosevelt restored."
http://commons.wikimedia.org/wiki/File:Muir_and_Roosevelt_restored.jpg
Wikimedia
Public domain.