Cushman Gregory T. Humboldtian Science, Creole Meteorology, and the Discovery of Human-Caused Climate Change in South America // Osiris, vol. 26, 2011.
Darwin Charles. On the Origin of Species by Means of Natural Selection. London: John Murray, 1859.
______. Life and Letters of Charles Darwin. Francis Darwin (ed.). New York and London: D. Appleton & Co., 1911.
______. The Autobiography of Charles Darwin 1809–1882. Nora Barlow (ed.). London: Collins, 1958.
______. Darwin’s Notebooks on the Transmutation of Species, Part iv // Bulletin of the British Museum. Gavin de Beer (ed.). Vol. 2, 1960.
______. The Correspondence of Charles Darwin. Frederick Burkhardt and Sydney Schmith (eds.). Cambridge: Cambridge University Press, 1985–2014.
______. Beagle Diary. Richard Darwin Keynes (ed.). Cambridge: Cambridge University Press, 2001.
______. The Voyage of the Beagle. Hertfordshire: Wordsworth Editions, 1997.
Darwin Erasmus. The Botanic Garden. Part II: Containing Loves of the Plants. A Poem. With Philosophical Notes, first published in 1789, London: J. Johnson, 1791.
Daudet Ernest. La Police politique. Chronique des temps de la Restauration d’après les rapports des agents secrets et les papiers du Cabinet noir, 1815–1820. Paris: Librairie Plon, 1912.
Davies Norman. Europe. A History. London: Pimlico, 1997.
Dean Bradley P. Natural History, Romanticism, and Thoreau // American Wilderness. A New History. Michael Lewis (ed.). Oxford: Oxford University Press, 2007.
Di Gregorio Mario A. From Here to Eternity: Ernst Haeckel and Scientific Faith. Göttingen: Vandenhoeck & Ruprecht, 2004.
______ (ed.). Charles Darwin’s Marginalia. New York and London: Garland, 1990.
Dibdin Thomas Frognall. A Bibliographical, Antiquarian, and Picturesque Tour in France and Germany. London: W. Bulmer and W. Nicol, 1821.
Dove Alfred. Die Forsters und die Humboldts. Leipzig: Dunder & Humplot, 1881.
Eber Ron. Wealth and Beauty. John Muir and Forest Conservation // John Muir. Family, Friends and Adventurers. Sally M. Miller and Daryl Morrison (eds.). Albuquerque: University of New Mexico Press, 2005.
Egerton Frank N. Roots of Ecology. Antiquity to Haeckel. Berkeley: University of California Press, 2012.
Ehrlich Willi. Goethes Wohnhaus am Frauenplan in Weimar. Weimar: Nationale Forschungs- und Gedenkstätten der Klassik, 1983.
Eichhorn Johannes. Die wirtschaftlichen Verhältnisse Alexander von Humboldts, Gedenkschrift zur 100. Wiederkehr seines Todestages. Berlin: Akademie Verlag, 1959.
Elden Stuart and Eduardo Mendieta