* Skovens Bog
* Forest Giants:De højeste træer på jorden
* Walking the High Valley
* Washington Wildlands
* Vilde og naturskønne Washington
* Eventyrland:En alternativ historie om nationalparkerne
* The Battle of the Wilderness:Sierra Club's Challenge of the Grand Canyon Dam Project
* Under overfladen:The Failure of the Glen Canyon Dam
* Herfra til evigheden:Rejs verden rundt for at finde det gode i mennesker og naturens vidundere
* Journey's End:Life and Death in the Mountains
* Liv og død på Grand Canyon
* En amerikansk originals liv og tider
* The Lone Ranger og Tonto Fistfight in Heaven
* Ser ud over kanten
* The Mountains Above the Sky:A Naturalist's Ramblings
* På høj jord
* Vores nationalparker:Amerikas bedste idé
* Den hemmelige skov
* Historien om det vilde vesten:en historie i tre dele
* Dette fantastiske land
* Vildmark i en verden i forandring
* Yellowstone
Artikler
* "The Case Against Grand Canyon Dam" (Sierra Club Bulletin, 1964)
* "Wilderness:A Place for Man" (National Parks Magazine, 1966)
* "The High Cost of Water" (Audubon, 1967)
* "The Glen Canyon Dam:A Boondoggle" (The Nation, 1968)
* "The National Parks:A Call to Action" (The New York Times, 1969)
* "The Death of the Grand Canyon" (Life, 1970)
* "The Wilderness Act:A Promise Unfulfilled" (Sierra Club Bulletin, 1971)
* "Kampen om nationalparkerne" (National Geographic, 1972)
* "The Future of the National Parks" (Audubon, 1973)
* "The Importance of Wilderness" (The New York Times, 1974)
* "The Last Stand of the National Parks" (Sierra Club Bulletin, 1975)
* "The Politics of Conservation" (The Nation, 1976)
* "The Sierra Club:A History of the First Century" (Sierra Club Bulletin, 1977)
* "The Wild and Scenic Rivers Act:A Promise Fulfilled" (Sierra Club Bulletin, 1978)
* "The National Parks:A Legacy for the Future" (National Geographic, 1979)
* "The Last Great Wilderness:The Arctic National Wildlife Refuge" (Audubon, 1980)
* "The Battle of the Wilderness:Sierra Club's Challenge of the Grand Canyon Dam Project" (Sierra Club Books, 1981)
* "The Glen Canyon Dam:A Tragic Mistake" (The Nation, 1982)
* "The Wilderness at Risk:The Reagan Administration's Attack on America's Wild Lands" (Sierra Club Bulletin, 1983)
* "The National Parks:A Call to Arms" (The New York Times, 1984)
* "The Legacy of John Muir:A Call to Action" (Sierra Club Bulletin, 1985)
* "The Future of the National Parks:A Blueprint for Action" (National Geographic, 1986)
* "The Last Stand of the Wilderness:The Arctic National Wildlife Refuge" (Audubon, 1987)
* "The Grand Canyon:A Celebration" (Sierra Club Bulletin, 1988)
* "The National Parks:A Call to Renewal" (The New York Times, 1989)
* "The Legacy of Stanley Wright Aultz:A Call to Action" (Sierra Club Bulletin, 1990)