Alexander von Humboldt (English Wikipedia)

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de Terra 1955, p. 3. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 4–5. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 5. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 6–7. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Nicolson & Wilson 1995, p. xvi. Nicolson, Malcolm; Wilson, Jason (1995). Introduction. Personal Narrative of a Journey to the Equinoctial Regions of the New Continent. By Alexander von Humboldt. New York: Penguin Books. ISBN 978-0-14-044553-4.
Wulf 2015, pp. 13, 17. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 17. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 18. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Nicolson & Wilson 1995, pp. xvi–xv. Nicolson, Malcolm; Wilson, Jason (1995). Introduction. Personal Narrative of a Journey to the Equinoctial Regions of the New Continent. By Alexander von Humboldt. New York: Penguin Books. ISBN 978-0-14-044553-4.
Nicolson & Wilson 1995, p. xv. Nicolson, Malcolm; Wilson, Jason (1995). Introduction. Personal Narrative of a Journey to the Equinoctial Regions of the New Continent. By Alexander von Humboldt. New York: Penguin Books. ISBN 978-0-14-044553-4.
Wulf 2015, pp. 76, 136. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Nicolson & Wilson 1995, p. lxvii. Nicolson, Malcolm; Wilson, Jason (1995). Introduction. Personal Narrative of a Journey to the Equinoctial Regions of the New Continent. By Alexander von Humboldt. New York: Penguin Books. ISBN 978-0-14-044553-4.
de Terra 1955, p. 51. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 53. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 54–55. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 18, 57. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. ^{[page needed]}. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 39. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Carl Freiesleben quoted in Wulf 2015, p. 39. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 80. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 83. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 91–92. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, pp. 56–59. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 232–233. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. ^{[page needed]}. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 62–63. Wulf's book includes a picture of the encounter (p. 63); she captions it "The battle between horses and electric eels". Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Cited in Wulf 2015, p. 362, n. 62. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Nicolson & Wilson 1995, p. lxviii. Nicolson, Malcolm; Wilson, Jason (1995). Introduction. Personal Narrative of a Journey to the Equinoctial Regions of the New Continent. By Alexander von Humboldt. New York: Penguin Books. ISBN 978-0-14-044553-4.
de Terra 1955, pp. 116–117. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Humboldt's claim was disputed by mountaineer Edward Whymper when he made the first ascent of Chimborazo in 1880.Whymper, Edward (1892). Travels amongst the Great Andes of the Equator. John Murray. pp. 30–32.
de Terra 1955, pp. 149–150. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 156. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 51, 156. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 175–176. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. 89. This publication includes Humboldt's first sketch of the Naturgemälde. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 380. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 375–376. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 177–178. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
McCullough, David (1992). Brave Companions. Portraits of History. Simon & Schuster. p. 3ff. ISBN 0-6717-9276-8.
Sachs 2006, p. 1. Sachs, Aaron (2006). The Humboldt Current: Nineteenth-Century Exploration and the Roots of American Environmentalism. New York: Viking. ISBN 0-670-03775-3.
de Terra 1955, p. 204. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 377. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. 166. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 171–174, 199–200. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 199–200. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 283–285. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 287. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Humboldt to Cancrin, quoted in de Terra 1955, p. 286. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, pp. 201–202. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 205. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 206–207. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
quoted in Wulf 2015, p. 207. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 203. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 306. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
quoted in de Terra 1955, p. 307. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. 433. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Quoted in Dickinson & Howarth 1933, p. 145 Dickinson, Robert Eric; Howarth, O. J. R. (1933). The Making of Geography (online Universal Digital Library, facsimile of original ed.). Oxford: Clarendon Press. OCLC 9640382.
Wulf 2015, p. 235. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 413. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 272. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 326–327. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 334–336. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, chapters 17, 19, 21, 22, 23. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 226. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 37. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, caption, [plate 11]. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Pfeiffer, Ida (1861). The Last Travels of Ida Pfeiffer, inclusive a visit to Madagaskar. London: Routledge, Warne and Routledge. p. x.
de Terra 1955, p. 210. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 311. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. ^{[page needed]} Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Humboldt and the New Infidelity, article found in Friedrich Kapp's Letters of Alexander von Humboldt to Varnhagen von Ense. From 1827 to 1858. With extracts from Varnhagen's diaries, and letters of Varnhagen and others to Humboldt (1860).
Sachs 2006, Ch. 3 Sachs, Aaron (2006). The Humboldt Current: Nineteenth-Century Exploration and the Roots of American Environmentalism. New York: Viking. ISBN 0-670-03775-3.
James 1913, p. 58. James, Helen Dickson (1913). Humboldt's Ideal of Humanity (Master of Arts in German). University of Illinois.
Wilhelm Humboldt (Freiherr von), Charlotte Hildebrand Diede, Catharine M. A. Couper (1849). Letters to a female friend: A complete ed., translated from the 2d German ed, Volume 2. J. Chapman, pp. 24–25
James 1913, pp. 56–58. James, Helen Dickson (1913). Humboldt's Ideal of Humanity (Master of Arts in German). University of Illinois.
Friedrich Kapp's Letters of Alexander von Humboldt to Varnhagen von Ense. From 1827 to 1858. With extracts from Varnhagen's diaries, and letters of Varnhagen and others to Humboldt (1860). Cambridge University Press. pp. 25–26.
Sachs 2006, "Notes", p. 29 Sachs, Aaron (2006). The Humboldt Current: Nineteenth-Century Exploration and the Roots of American Environmentalism. New York: Viking. ISBN 0-670-03775-3.
Wulf 2015, p. 71. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 363. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 317. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
quoted in Wulf 2015, p. 279. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 368–369. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, Appendix D. "List of Geographic Features Named after Alexander von Humboldt", pp. 377–378. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.

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Personal narrative of travels to the equinoctial regions of America, during the years 1799–1804/ by Alexander von Humboldt and Aimé Bonpland; translated from the French of Alexander von Humboldt and edited by Thomasina Ross (vols 2 & 3) Archived 2017-09-04 at the Wayback Machine, biodiversitylibrary.org
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Mignone, Pablo (2010). "Ritualidad estatal, capacocha y actores sociales locales: El Cementerio del volcán Llullaillaco". Estudios Atacameños (in Spanish) (40): 43–62. doi:10.4067/S0718-10432010000200004. hdl:11336/14124. ISSN 0718-1043. [D]iscutimos el clásico enfoque arqueológico acerca de este tipo de ritual como dominio exclusivo y protagónico del Estado inca [...] Luego el camino se bifurca para dirigirse uno hacia una plataforma de entierro, a 6715 m.snm, y el otro a la cima del volcán, unos 20 m más arriba.
Bruhns 1873, p. 382 This article incorporates public domain material from websites or documents of the Library of Congress.. Bruhns, Karl, ed. (1873). Life of Alexander von Humboldt. Vol. II. Translated by Jane and Caroline Lassell. London: Longmans, Green, and Co. hdl:2027/uc2.ark:/13960/t5m903z33. This article incorporates text from this source, which is in the public domain.
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Carl Freiesleben quoted in Wulf 2015, p. 39. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
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de Terra 1955, p. 83. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
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Wulf 2015, pp. 171–174, 199–200. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 199–200. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 283–285. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 287. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Humboldt to Cancrin, quoted in de Terra 1955, p. 286. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, pp. 201–202. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 205. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, pp. 206–207. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
quoted in Wulf 2015, p. 207. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 203. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 306. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
quoted in de Terra 1955, p. 307. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, p. 433. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Quoted in Dickinson & Howarth 1933, p. 145 Dickinson, Robert Eric; Howarth, O. J. R. (1933). The Making of Geography (online Universal Digital Library, facsimile of original ed.). Oxford: Clarendon Press. OCLC 9640382.
Wulf 2015, p. 235. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 413. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 272. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 326–327. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, pp. 334–336. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Wulf 2015, chapters 17, 19, 21, 22, 23. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 226. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 37. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, caption, [plate 11]. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 210. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 311. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Pratt, Mary Louise (2008). Imperial Eyes : Travel Writing and Transculturation (2nd ed.). London: Routledge. p. ^{[page needed]}. ISBN 978-0-203-93293-3. OCLC 299750885.
Wilke, Sabine (2011). "Von angezogenen Affen und angekleideten Männern in Baja California: Zu einer Bewertung der Schriften Alexander von Humboldts aus postkolonialer Sicht". German Studies Review. 34 (2): 287–304. ISSN 0149-7952. JSTOR 41303732.
Sachs, Aaron (2003). "The Ultimate 'Other': Post-Colonialism and Alexander Von Humboldt's Ecological Relationship with Nature". History and Theory. 42 (4): 111–135. doi:10.1046/j.1468-2303.2003.00261.x. ISSN 0018-2656. JSTOR 3590683.
Wulf 2015, p. ^{[page needed]} Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
Wulf 2015, p. 71. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, p. 363. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
de Terra 1955, p. 317. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
quoted in Wulf 2015, p. 279. Wulf, Andrea (2015). The Invention of Nature : The Adventures of Alexander von Humboldt, the Lost Hero of Science. New York: Knopf. ISBN 978-1-84854-898-5. OCLC 911240481.
de Terra 1955, pp. 368–369. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.
Devitt, Thomas J.; Tseng, Karen; Taylor-Adair, Marlena; Koganti, Sannidhi; Timugura, Alice; Cannatella, David C. (8 March 2023). "Two new species of Eleutherodactylus from western and central Mexico ( Eleutherodactylus jamesdixoni sp. nov., Eleutherodactylus humboldti sp. nov.)". PeerJ. 11: e14985. doi:10.7717/peerj.14985. ISSN 2167-8359. PMC 10007972. PMID 36915652.
de Terra 1955, Appendix D. "List of Geographic Features Named after Alexander von Humboldt", pp. 377–378. de Terra, Helmut (1955). Humboldt: The Life and Times of Alexander von Humboldt, 1769–1859. New York: Alfred A. Knopf. OCLC 902143803.

worldcat.org

Pratt, Mary Louise (2008). Imperial Eyes : Travel Writing and Transculturation (2nd ed.). London: Routledge. p. ^{[page needed]}. ISBN 978-0-203-93293-3. OCLC 299750885.