"National parks and reserves United States History." . . . . "National parks and reserves United States History Juvenile literature." . . "National parks and reserves History." . . "Yosemite National Park (Calif.)" . . . . . "History" . "History"@en . . . . "Theodore Roosevelt, John Muir, and our national parks" . "Theodore Roosevelt, John Muir, and our national parks"@en . . . . . . . . . . . . . . . . . "The camping trip that changed America"@en . . "Electronic books"@en . "Picture books" . . . . "Picture books for children"@en . "Picture books for children" . . . "Juvenile works" . "Juvenile works"@en . "Offers insight into the camping trip that President Theodore Roosevelt and naturalist John Muir took to the redwoods of Yosemite in 1903, during which the two men had experiences and conversations that eventually contributed to the establishment of national parks in the United States."@en . "Offers insight into the camping trip that President Theodore Roosevelt and naturalist John Muir took to the redwoods of Yosemite in 1903, during which the two men had experiences and conversations that eventually contributed to the establishment of national parks in the United States." . . . "The camping trip that changed America : Theodore Roosevelt, John Muir, and our national parks" . "The camping trip that changed America : Theodore Roosevelt, John Muir, and our national parks"@en . . "Environmental protection United States History." . . "Camping." . . "Environmentalism History." . . "Environmentalism United States History Juvenile literature." . .