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- John Burroughs Talks: His Reminiscences and Comments as Reported by Clifton Johnson, 1922 -

- 1922
- Collections - Artifact
John Burroughs Talks: His Reminiscences and Comments as Reported by Clifton Johnson, 1922
- Paul Revere's Ride, 1907 -

- 1907
- Collections - Artifact
Paul Revere's Ride, 1907
- Book, "Silent Spring," 1962 - <em>Silent Spring</em>, by marine biologist Rachel Carson, sparked the environmental movements of the 1960s. It described how widespread pesticide use, in particular DDT, was harming and killing birds and other animals as well as threatening the health of humans. The book helped the general population understand the interconnected nature of ecosystems and how localized polluting affects larger natural systems.

- 1962
- Collections - Artifact
Book, "Silent Spring," 1962
Silent Spring, by marine biologist Rachel Carson, sparked the environmental movements of the 1960s. It described how widespread pesticide use, in particular DDT, was harming and killing birds and other animals as well as threatening the health of humans. The book helped the general population understand the interconnected nature of ecosystems and how localized polluting affects larger natural systems.
- "The Summit of the Years," by John Burroughs, 1913 -

- 1913
- Collections - Artifact
"The Summit of the Years," by John Burroughs, 1913
- "Steep Trails: California, Utah, Nevada, Washington, Oregon, The Grand Canyon," 1918 - John Muir (1838-1914) was one of America's most influential naturalists and conservationists. For fifty years, Muir explored America and wrote about the country's natural beauty. His writings inspired, and continue to inspire, Americans to experience the natural world and work for its protection. <em>Steep Trails</em>, assembled after his death, contains letters and essays about his travels through the American West.

- 1918
- Collections - Artifact
"Steep Trails: California, Utah, Nevada, Washington, Oregon, The Grand Canyon," 1918
John Muir (1838-1914) was one of America's most influential naturalists and conservationists. For fifty years, Muir explored America and wrote about the country's natural beauty. His writings inspired, and continue to inspire, Americans to experience the natural world and work for its protection. Steep Trails, assembled after his death, contains letters and essays about his travels through the American West.