Aldo Leopold

Rand Aldo Leopold was born in Burlington, Iowa,{{cite news|title=To Her, He Was Simply Dad |url=https://www.newspapers.com/clip/41007596/aldo_leopold_18871948/ |newspaper=The Capital Times |date=February 27, 2008 |page=29 |via = Newspapers.com |access-date=December 24, 2019}} {{Open access}} on January 11, 1887. His father, Carl Leopold, was a businessman who made walnut desks{{cite web |last1=Delhomme |first1=PJ |title=B&C Member Spotlight - Aldo Leopold |url=https://www.boone-crockett.org/bc-member-spotlight-aldo-leopold |website=Boone And Crockett Club |date=December 12, 2022 |access-date=10 February 2025}} and was first cousin to his wife, Clara Starker. Charles Starker, father of Carl and uncle to Clara, was a German immigrant, educated in engineering and architecture.Bob Hansen. "[http://www.leopoldheritage.org/index.php/leopold-s-legacy/hansen-column Bringing up Aldo] {{Webarchive|url=https://web.archive.org/web/20180313225822/http://www.leopoldheritage.org/index.php/leopold-s-legacy/hansen-column |date=March 13, 2018 }}". Leopold Heritage Group. Rand Aldo was named after two of his father's business partners—C. W. Rand and Aldo Sommers—although he eventually dropped the use of "Rand". The Leopold family included younger siblings Mary Luize, Carl Starker, and Frederic.Lorbiecki, p. 7. Leopold's first language was German,Meine, p. 15. although he mastered English at an early age.

Aldo Leopold's early life was highlighted by the outdoors. Carl would take his children on excursions into the woods and taught his oldest son woodcraft and hunting.Meine, p. 18. Aldo showed an aptitude for observation, spending hours counting and cataloging birds near his home.Lorbiecki, p. 14. Mary would later say of her older brother, "He was very much an outdoorsman, even in his extreme youth. He was always out climbing around the bluffs, or going down to the river, or going across the river into the woods."Lorbiecki, p. 9. He attended Prospect Hill Elementary, where he ranked at the top of his class, and then, the overcrowded Burlington High School. Every August, the family vacationed in Michigan on the forested Marquette Island in Lake Huron, which the children took to exploring.Meine, p. 22.

File:Aldo Leopold Sheffield Scientific School Class of 1908.jpg Sheffield Scientific School yearbook, 1908]]

In 1900, Gifford Pinchot, who oversaw the newly implemented Division of Forestry in the Department of Agriculture, donated money to Yale University to begin one of the nation's first forestry schools. Hearing of this development, the teenaged Leopold decided on forestry as a vocation.Lorbiecki, p. 24. His parents agreed to let him attend The Lawrenceville School, a preparatory college in New Jersey, to improve his chances of admission to Yale. The Burlington High School principal wrote in a reference letter to the headmaster at Lawrenceville that Leopold was "as earnest a boy as we have in school... painstaking in his work.... Moral character above reproach."Lorbiecki, p. 25. He arrived at his new school in January 1904, shortly before he turned 17. He was considered an attentive student, although he was again drawn to the outdoors. Lawrenceville was suitably rural, and Leopold spent much time mapping the area and studying its wildlife.Meine, pp. 37–38. Leopold studied at the Lawrenceville School for a year, during which time he was accepted to Yale. Because the Yale School of Forestry granted only graduate degrees, he first enrolled in Sheffield Scientific School's preparatory forestry courses for his undergraduate studies, in New Haven, Connecticut.Lorbiecki, p. 31. While Leopold was able to explore the woods and fields of Lawrenceville daily, sometimes to the detriment of his studying, at Yale he had little opportunity to do so; his studies and social life made his outdoor trips few and far between.Meine, p. 52. Leopold graduated from the Yale Forestry School in 1909.The Aldo Leopold Foundation. [https://www.aldoleopold.org/about/aldo-leopold/ Aldo Leopold].[https://news.yale.edu/2011/11/09/legacy-renowned-conservationist-aldo-leopold-profiled-documentary Legacy of renowned conservationist Aldo Leopold profiled in documentary]. Yale News.

In 1909, Leopold was assigned to the Forest Service's District 3 in the Arizona and New Mexico territories. At first, he was a forest assistant at the Apache National Forest in the Arizona Territory. In 1911, he was transferred to the Carson National Forest in northern New Mexico. Leopold's career, which kept him in New Mexico until 1924, included developing the first comprehensive management plan for the Grand Canyon, writing the Forest Service's first game and fish handbook, and proposing Gila Wilderness Area, the first national wilderness area in the Forest Service system.Meine

On April 5, 1923, he was elected an associate member (now called "professional member") of the Boone and Crockett Club, a wildlife conservation organization founded by Theodore Roosevelt and George Bird Grinnell.{{Cite web|url=https://cdm16013.contentdm.oclc.org/digital/collection/p16013coll13/id/125|title=CONTENTdm|website=cdm16013.contentdm.oclc.org}}

In 1924, he accepted transfer to the U.S. Forest Products Laboratory in Madison, Wisconsin, and became an associate director.

In 1933, he was appointed Professor of Game Management in the Agricultural Economics Department at the University of Wisconsin, the first such professorship of wildlife management. At the same time he was named Research Director of the University of Wisconsin–Madison Arboretum.{{Harvnb|Court|2012|pp=63–64}} Leopold and other members of the first Arboretum Committee initiated a research agenda around re-establishing "original Wisconsin" landscape and plant communities, particularly those that predated European settlement, such as tallgrass prairie and oak savanna.{{cite web | title=History | website=UW Arboretum | url=https://arboretum.wisc.edu/about-us/history/}}

Under the Oberlaender Trust of the Carl Schurz Memorial Foundation, Leopold was part of the 1935 group of six U.S. Forest Service associates who toured the forests of Germany and Austria. Leopold was invited specifically to study game management, and this was his first and only time abroad. His European observations would have a significant impact on his ecological thinking, leading him to view the German policies in favor of blocks of monoculture trees in straight lines as a cautionary tale leading to soil degradation and an overall loss of biodiversity.{{Cite web|title=The Oberlaender Trust and American Forestry|url=https://foresthistory.org/digital-collections/the-oberlaender-trusts-and-american-forestry/|access-date=2021-04-30|website=Forest History Society|language=en}}

After 1935, Leopold was no longer working for the U.S. Forest Service; he had left the agency in 1928 to work independently and later became a professor at the University of Wisconsin.

File:Aldo Leopold's headstone.jpeg]]

Leopold married Estella Bergere in northern New Mexico in 1912 and they had five children together.Leopold Family. "[https://www.aldoleopold.org/about/aldo-leopold/leopold-family/ Leopold Family]". The Aldo Leopold Foundation. They lived in a modest two-story home close to the UW–Madison campus. His children followed in his footsteps as teachers and naturalists: Aldo Starker Leopold (1913–1983) was a wildlife biologist and professor at UC Berkeley;{{cite journal|author=Raitt, RJ|url=http://sora.unm.edu/sites/default/files/journals/auk/v101n04/p0868-p0871.pdf |title=In Memoriam: A. Starker Leopold|journal=Auk|year=1984|volume= 101|issue=4|pages= 868–871|doi=10.2307/4086914|jstor=4086914 }} Luna B. Leopold (1915–2006) became a hydrologist and geology professor at UC Berkeley; Nina Leopold Bradley (1917–2011) was a researcher and naturalist; Aldo Carl Leopold (1919–2009) was a plant physiologist,Mark Staves and Randy Wayne. (December 3, 2009.) "[http://www.lansingstar.com/content/view/5628/71/#ixzz0ZaZuYZGo In Memoriam: A. Carl Leopold]". The Lansing Star. Retrieved on February 2, 2010. who taught at Purdue University for 25 years; and daughter Estella Leopold (1927–2024) was a noted botanist and conservationist and professor emerita at the University of Washington.

Leopold purchased 80 acres in the sand country of central Wisconsin. The once-forested region had been logged, swept by repeated fires, overgrazed by dairy cows, and left barren. He put his theories to work in the field and eventually set to work writing his best-selling A Sand County Almanac (1949) which was finished just prior to his death. Leopold died of a heart attack while battling a wild fire on a neighbor's property.Lorbiecki, p. 179. Leopold is buried at Aspen Grove Cemetery in Burlington.{{citation needed |date=June 2022}}

Today, Leopold's home is an official landmark of the city of Madison.

Early on, Leopold was assigned to hunt and kill bears, wolves, and mountain lions in New Mexico. Local ranchers hated these predators because of livestock losses, but Leopold came to respect the animals. One day after fatally shooting a wolf, Leopold reached the animal and was transfixed by a "fierce green fire dying in her eyes." That experience changed him and put him on the path toward an ecocentric outlook.{{cite book|last1=Withgott|first1=Jay|last2=Laposata|first2=Matthew |title= Essential Environment: the science behind the stories|edition=4th|page=14| isbn=978-0-321-75290-1 |date=2012|publisher=Pearson }} He developed an ecological ethic that replaced the earlier wilderness ethic that stressed the need for human dominance. His rethinking the importance of predators in the balance of nature has resulted in the return of bears and mountain lions to New Mexico wilderness areas.

By the early 1920s, Leopold had concluded that a particular kind of preservation should be embraced in the national forests of the American West. He was prompted to this by the rampant building of roads to accommodate the "proliferation of the automobile" and the related increasingly heavy recreational demands placed on public lands. He was the first to employ the term "wilderness" to describe such preservation. Over the next two decades, he added ethical and scientific rationales to his defense of the wilderness concept. Leopold believed that it is easier to maintain wilderness than to create it.{{Cite journal |last=Miller |first=Char |date=January 2006 |title=Aldo Leopold (1921) The Wilderness and Its Place in Forest Recreation Policy, Journal of Forestry 19(7): 718-721 |url=https://academic.oup.com/jof/article/104/1/51/4599208?login=true |journal=Journal of Forestry |volume=104| issue = 1 |pages=51|doi=10.1093/jof/104.1.51 }} In one essay, he rhetorically asked, "Of what avail are forty freedoms without a blank spot on the map?" Leopold saw a progress of ethical sensitivity from interpersonal relationships, to relationships to society as a whole, to relationships with the land, leading to a steady diminution of actions based on expediency, conquest, and self-interest. Leopold thus rejected the utilitarianism of conservationists such as Theodore Roosevelt.

File:Aldo Leopold trip to the Rio Gavilan (5441676907).jpg

By the 1930s, Leopold had become one of the first Americans to publish extensively on the startup discipline of wildlife management. He advocated the scientific management of wildlife habitats by both public and private landholders rather than a reliance on game refuges, hunting laws, and other methods intended to protect specific species of desired game. In his 1933 book Game Management, Leopold defined the science of wildlife management as "the art of making land produce sustained annual crops of wild game for recreational use." But, as Curt Meine has pointed out, he also considered it to be a technique for restoring and maintaining diversity in the environment.

The concept of "wilderness" also took on a new meaning; Leopold no longer saw it as a hunting or recreational ground, but as an arena for a healthy biotic community, including wolves and mountain lions. In 1935, he helped found the Wilderness Society, dedicated to expanding and protecting the nation's wilderness areas. He regarded the society as "one of the focal points of a new attitude—an intelligent humility toward Man's place in nature."Flader, p. 29. Science writer Connie Barlow says Leopold wrote eloquently from a perspective that today would be called Religious Naturalism.{{cite web |url=http://www.metanexus.net/blog/ritualizing-big-history |title=Ritualizing Big History |date= March 14, 2013|publisher=Metanexus blog}}

Though often forgotten, thinking about population dynamics and consumption also shaped Aldo Leopold’s ecological vision in profound ways. By studying wildlife population fluctuations, Leopold extended many of the ideas about carrying capacity and environmental degradation that Raymond Pearl and Edward Murray East had articulated, and these ideas, in turn, shaped his path-breaking ideas of ecological interconnection. Moreover, although later readers associate Leopold with wildlife ecology, his career helps show how Malthusian ideas of human society intertwined and overlapped with ideas of nature. He was greatly influenced by ecologists who themselves gleaned ideas from Malthusian models of human society, and himself often thought of human events—especially the Great Depression and World War II—in terms of the models of population and consumption that he was developing for animals. Thomas Robertson (2012). The Malthusian Moment: Global Population Growth and the Birth of American Environmentalism, p 23-29.

Leopold's nature writing is notable for its simple directness. His portrayals of various natural environments through which he had moved, or had known for many years, displayed impressive intimacy with what exists and happens in nature. This includes detailed diaries and journals of his Forest Service activity, hunting and field experience, as well as observations and activities at his Sand County farm.{{Cite web|url=https://uwdc.library.wisc.edu/collections/aldoleopold/|title=Aldo Leopold Archives – UW Digital Collections|language=en-US|access-date=2020-02-22}} He offered frank criticism of the harm he believed was frequently done to natural systems (such as land) out of a sense of a culture or society's sovereign ownership over the land base – eclipsing any sense of a community of life to which humans belong. He felt the security and prosperity resulting from "mechanization" now gives people the time to reflect on the preciousness of nature and to learn more about what happens there; however, he also wrote, "Theoretically, the mechanization of farming ought to cut the farmer's chains, but whether it really does is debatable."Leopold, A. A Sand County Almanac (1970 ed.) p. 262)

The book was published in 1949, shortly after Leopold's death. The book was structured in a series of monthly essays where he went in depth about land ethics and nature. Several of these monthly essays were accompanied with sketches from the different landscapes and plants he found. Additionally, he would have philosophical segments that would contribute to his land ethic concepts. One of the well-known quotes from the book which clarifies his land ethic is,

A thing is right when it tends to preserve the integrity, stability, and beauty of the biotic community. It is wrong when it tends otherwise. (p.262)

The concept of a trophic cascade is put forth in the chapter, "Thinking Like a Mountain", wherein Leopold realizes that killing a predatory wolf carries serious implications for the rest of the ecosystemLeopold, Aldo [http://www.eco-action.org/dt/thinking.html "Thinking Like a Mountain"] {{Webarchive|url=https://web.archive.org/web/20090104183119/http://www.eco-action.org/dt/thinking.html |date=January 4, 2009 }} — a conclusion that found sympathetic appreciation generations later:

{{blockquote|In January 1995 I helped carry the first grey wolf into Yellowstone, where they had been eradicated by federal predator control policy only six decades earlier. Looking through the crates into her eyes, I reflected on how Aldo Leopold once took part in that policy, then eloquently challenged it. By illuminating for us how wolves play a critical role in the whole of creation, he expressed the ethic and the laws which would reintroduce them nearly a half-century after his death.|Bruce Babbitt, former Secretary of the InteriorLorbiecki, quote on back cover}}

Thinking Like a Mountain was originally written during World War II and shows that Leopold's thinking was shaped by that global cataclysm. Thomas Robertson (2012). The Malthusian Moment: Global Population Growth and the Birth of American Environmentalism, Rutgers University Press, p 28-29.

In "The Land Ethic", a chapter in A Sand County Almanac, Leopold delves into conservation in "The Ecological Conscience" section. He wrote: "Conservation is a state of harmony between men and land." He noted that conservation guidelines at the time boiled down to: "obey the law, vote right, join some organizations, and practice what conservation is profitable on your own land; the government will do the rest." (p. 243–244)

Leopold explained:

{{blockquote|The land ethic simply enlarges the boundaries of the community to include soils, waters, plants, and animals, or collectively: the land.

This sounds simple: do we not already sing our love for and obligation to the land of the free and the home of the brave? Yes, but just what and whom do we love? Certainly not the soil, which we are sending helter-skelter down river. Certainly not the waters, which we assume have no function except to turn turbines, float barges, and carry off sewage. Certainly not the plants, of which we exterminate whole communities without batting an eye. Certainly not the animals, of which we have already extirpated many of the largest and most beautiful species. A land ethic of course cannot prevent the alteration, management, and use of these 'resources,' but it does affirm their right to continued existence, and, at least in spots, their continued existence in a natural state. In short, a land ethic changes the role of Homo sapiens from conqueror of the land-community to plain member and citizen of it. It implies respect for his fellow-members, and also respect for the community as such.}}

In 1950 The Wildlife Society honored Leopold by creating an annual award in his name.

The Aldo Leopold Foundation of Baraboo, Wisconsin, was founded in 1982 by Aldo and Estella Leopold's five children as a 501(c)3 not-for-profit conservation organization whose mission is "to foster the land ethic through the legacy of Aldo Leopold."{{Cite web|url=https://www.aldoleopold.org/about/mission-vision/|title=Mission / Vision|website=The Aldo Leopold Foundation}} The Aldo Leopold Foundation owns and manages the original Aldo Leopold Shack and Farm and 300 surrounding acres, in addition to several other parcels. Its headquarters is the green-built Leopold Center where it conducts educational and land stewardship programs. The foundation also acts as the executor of Leopold's literary estate, encourages scholarship on Leopold, and serves as a clearinghouse for information regarding Leopold, his work, and his ideas. It provides interpretive resources and tours for thousands of visitors annually, distributes a curriculum about how to use Leopold's writing and ideas in environmental education.{{Cite web|url=https://www.aldoleopold.org/teach-learn/leopold-education-project/|title=Leopold Education Project|website=The Aldo Leopold Foundation|access-date=January 2, 2018|archive-date=December 9, 2022|archive-url=https://web.archive.org/web/20221209211657/https://www.aldoleopold.org/teach-learn/leopold-education-project/|url-status=dead}} The center maintains a robust website and numerous print resources. In 2012, in collaboration with the United States Forest Service, the foundation and the Center for Humans and Nature released the first full-length film about Leopold, titled Green Fire: Aldo Leopold and a Land Ethic for Our Time.{{cite web|url=http://www.aldoleopold.org/greenfire/index.shtml|title=Green Fire Film|publisher=The Aldo Leopold Foundation|access-date=January 2, 2018|archive-date=October 28, 2016|archive-url=https://web.archive.org/web/20161028103012/http://www.aldoleopold.org/greenfire/index.shtml|url-status=dead}} The film aired on public television stations across the nation and won a Midwest regional Emmy award in the documentary category.{{Cite web|url=https://www.aldoleopold.org/teach-learn/green-fire-film/about-green-fire/|title=About Green Fire|website=The Aldo Leopold Foundation}}

File:Aldo Leopold Wilderness Research Institute at University of Montana Missoula 20130725.JPG

The Aldo Leopold Wilderness in New Mexico's Gila National Forest was named after him in 1980.[http://www.wilderness.net/index.cfm?fuse=NWPS&sec=wildView&wid=4&tab=General&CFID=5163954&CFTOKEN=93201038 Aldo Leopold Wilderness] {{Webarchive|url=https://web.archive.org/web/20160304051059/http://www.wilderness.net/index.cfm?fuse=NWPS&sec=wildView&wid=4&tab=General&CFID=5163954&CFTOKEN=93201038 |date=March 4, 2016 }}, Wilderness.net

The Leopold Center for Sustainable Agriculture was established in 1987 at Iowa State University in Ames. It was named in honor of Leopold. Since its founding, it has pioneered new forms of sustainable agriculture practices.

The U.S. Forest Service established the Aldo Leopold Wilderness Research Institute at the University of Montana, Missoula in 1993. It is "the only Federal research group in the United States dedicated to the development and dissemination of knowledge needed to improve management of wilderness, parks, and similarly protected areas."{{cite web|url=http://leopold.wilderness.net/about-us/default.php |title=About Us |publisher=Aldo Leopold Wilderness Research Institute |access-date=January 2, 2018}}

The Aldo Leopold Neighborhood Historic District, which includes Leopold's former home in Albuquerque, New Mexico, was listed on the National Register of Historic Places in 2002.{{cite web | url={{NRHP url|id=02001164}} | title=National Register of Historic Places Registration Form: Aldo Leopold Neighborhood Historic District | publisher=National Park Service | date=October 16, 2002}} with {{NRHP url | id=02001164 | photos=y | title=11 accompanying photos}}

The Aldo Leopold Legacy Trail System, a system of 42 state trails in Wisconsin, was created by the state in 2007."[http://dnr.wi.gov/news/BreakingNews_Print.asp?id=1290 DNR Secretary: Aldo Leopold's legacy alive on renamed trails Find a Wisconsin State Trail] {{Webarchive|url=https://web.archive.org/web/20180103011811/http://dnr.wi.gov/news/BreakingNews_Print.asp?id=1290 |date=January 3, 2018 }}. Wisconsin Department of Natural Resources. Retrieved January 2, 2018."[http://www.wisgov.state.wi.us/journal_media_detail.asp?locid=19&prid=3032 Governor Doyle Names State Trails 'Aldo Leopold Legacy Trail System']". WI Office of the Governor: Media Room. Retrieved January 31, 2010."[http://host.madison.com/news/article_fed70e34-b46a-517a-94ce-366453d16382.html State trails now a legacy to Aldo Leopold]". (June 5, 2009.) The Capital Times. Retrieved January 31, 2010.

The Leopold Center for Sustainable Agriculture in Iowa, created through the 1987 Iowa Groundwater Protection Act is committed to "new ways to farm profitably while conserving natural resources as well as reducing negative environmental and social impacts".{{Cite web |url=https://www.leopold.iastate.edu/about/leopold-center |title=Leopold Center for Sustainable Agriculture |date=2019-11-22 |website=www.leopold.iastate.edu |access-date=2019-11-22}}

An organization, the Leopold Heritage Group, is "dedicated to promoting the global legacy of Aldo Leopold in his hometown of Burlington, Iowa."{{cite web|url=http://www.leopoldheritage.org/|title=Leopold Heritage Group|access-date=November 26, 2009|archive-url=https://web.archive.org/web/20160228013556/http://www.leopoldheritage.org/|archive-date=February 28, 2016|url-status=dead}}

In 1985, Leopold was inducted along with John Muir as the first inductees to the Wisconsin Conservation Hall of Fame. {{cite web | url=https://wchf.org/about/ | title=About the Wisconsin Conservation Hall of Fame }}

The Leopold Residence Hall at the University of Wisconsin-Madison was named after him. It opened in 2013.{{Cite web |title=Leopold Residence Hall |url=https://www.housing.wisc.edu/undergraduate/residence-halls/leopold/ |access-date=2025-02-20 |website=University Housing |language=en-US}}

• Report on a Game Survey of the North Central States (Madison: SAAMI, 1931)
• Game Management (New York: Scribner's, 1933)
• A Sand County Almanac (New York: Oxford, 1949)
• Round River: From the Journals of Aldo Leopold (New York: Oxford, 1953)
• A Sand County Almanac and Other Writings on Ecology and Conservation (New York: Library of America, 2013)

• Grey Owl
• Timeline of environmental events
• Land Ethic
• Sand County Foundation
• Yale School of Forestry & Environmental Studies
• Aldo Leopold Legacy Trail System
• Aldo Leopold Wilderness
• Leopold Wetland Management District
• Ian McTaggart-Cowan
• J. Drew Lanham

{{Reflist|2|refs=

{{cite news

| url = https://wildlife.org/engage/awards/aldo-leopold-award/

| title = Aldo Leopold Memorial Award

| work = The Wildlife Society

| access-date = 2020-12-17

}}

}}

• Errington, P. L. 1948. "In Appreciation of Aldo Leopold". The Journal of Wildlife Management, 12(4).
• Flader, Susan L. 1974. Thinking like a Mountain: Aldo Leopold and the Evolution of an Ecological Attitude toward Deer, Wolves, and Forests. Columbia: University of Missouri Press. {{ISBN|0-8262-0167-9}}.
• Lorbiecki, Marybeth. 1996. Aldo Leopold: A Fierce Green Fire. Helena, Mont.: Falcon Press. {{ISBN|1-56044-478-9}}.
• Meine, Curt. 1988. Aldo Leopold: His Life and Work. Madison: University of Wisconsin Press. {{ISBN|0-299-11490-2}}.

• Callicott, J. Baird. 1987. Companion to A Sand County Almanac: Interpretive and Critical Essays. Madison, Wis.: University of Wisconsin Press. {{ISBN|0-299-11230-6}}.
• {{cite book|last=Court|first=Franklin E.|title=Pioneers of Ecological Restoration: The People and Legacy of the University of Wisconsin Arboretum|url=https://books.google.com/books?id=kR5L6qlKX10C|year=2012|publisher=University of Wisconsin Press|isbn=978-0-299-28663-7}}
• Knight, Richard L. and Suzanne Riedel (ed). 2002. Aldo Leopold and the Ecological Conscience. Oxford University Press. {{ISBN|0-19-514944-0}}.
• Lannoo, Michael J. 2010. Leopold's Shack and Ricketts's Lab: The Emergence of Environmentalism. Berkeley: University of California Press. {{ISBN|978-0-520-26478-6}}.
• Lutz, Julianne. Aldo Leopold's Odyssey: Rediscovering the Author of A Sand County Almanac. Washington, D.C.: Shearwater Books/Island Press, 2006.
• McClintock, James I. 1994. Nature's Kindred Spirits. University of Wisconsin Press. {{ISBN|0-299-14174-8}}.
• Nash, Roderick. 1967. Wilderness and the American Mind, New Haven: Yale University Press.{{ISBN?}}
• Newton, Julianne Lutz. 2006. Aldo Leopold's Odyssey. Washington: Island Press/Shearwater Books. {{ISBN|978-1-59726-045-9}}.
• {{cite journal |url=http://www.amff.com/assets/images/archived-journals/2003-Vol29-No4web.pdf |title=Aldo Leopold's Contribution to Fly Fishing |author=Petersen, Harry L. |journal=The American Fly Fisher |volume=29 |number=4 |date=Fall 2003 |access-date=2014-11-16 |pages=2–10 |url-status=dead |archive-url=https://web.archive.org/web/20141129030408/http://www.amff.com/assets/images/archived-journals/2003-Vol29-No4web.pdf |archive-date=November 29, 2014 |df=mdy-all }}
• Sutter, Paul S. 2002. Driven Wild: How the Fight against Automobiles Launched the Modern Wilderness Movement. Seattle: University of Washington Press. {{ISBN|0-295-98219-5}}.
• Tanner, Thomas. 1987. Aldo Leopold: The Man and His Legacy. Ankeny, Iowa Soil Conservation Soc. of America.{{ISBN?}}
• {{cite book |last1=Wild |first1=Peter |author1-link=Peter Wild |title=Pioneer Conservationists of Western America |date=1978 |publisher=Mountain Press Publishing |location=Missoula |isbn=0878421076 |pages=93–103 |chapter=8: Move Toward Holism: 'Thinking Like a Mountain,' Aldo Leopold Breaks with the Forest Service |others=Edward Abbey (Introduction)}}

{{Commons category|Aldo Leopold}}

{{wikiquote}}

• [http://www.aldoleopold.org/ Aldo Leopold Foundation]
• [https://web.archive.org/web/20160228013556/http://www.leopoldheritage.org/ Leopold Heritage Group]
• [http://digital.library.wisc.edu/1711.dl/AldoLeopold The Aldo Leopold Archives] Digitized archival materials held by the University of Wisconsin–Madison Archives.
• [http://www.leopoldconservationaward.org/ Leopold Conservation Award]
• [https://web.archive.org/web/20071018053403/http://gargravarr.cc.utexas.edu/chrisj/leopold-quotes.html Excerpts from the Works of Aldo Leopold]
• [http://www.neohasid.org/stoptheflood/the_land_ethic/ The Land Ethic—neohasid.org]
• [http://www.eoearth.org/article/Aldo_Leopold's_Land_Ethic/ The Encyclopedia of Earth]
• [http://www.lep.org/ Leopold Education Project]
• [https://qa.pbs.org/video/wpt-documentaries-aldo-leopold-learning-land/ Aldo Leopold: Learning from the Land] {{Webarchive|url=https://web.archive.org/web/20190505095033/https://qa.pbs.org/video/wpt-documentaries-aldo-leopold-learning-land/ |date=May 5, 2019 }} Documentary produced by Wisconsin Public Television
• {{IMDb name|6363257}}
• [https://www.mpl.org/about/wisconsin_writers_wall_of_fame.php]

{{The Wilderness Society}}{{Environmentalism}}{{Authority control}}

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