Übereinstimmung oder Gegensatz? Zum Widersprüchlichen Verhältnis zwischen A. v. Humboldt und F. W. J. Schelling // Berliner Manuskripte zur Alexander-von-Humboldt Forschung, vol. 15, 2000.
______. Himmel und Erde. Alexander von Humboldt und sein Kosmos. Berlin: Akademie Verlag, 2004.
______. Zum Verhältnis Charles Darwins zu Alexander v. Humboldt und Christian Gottfried Ehrenberg // HiN X, vol. 18, 2009.
______. Naturwahrheit und ästhetische Umsetzung: Alexander von Humboldt im Briefwechsel mit bildenden Künstlern. Berlin: Akademie Verlag, 2013.
White Jerry. London in the Eighteenth Century. A Great and Monstrous Thing. London: The Bodley Head, 2012.
Whitman Walt. Leaves of Grass, Boston: Thayer and Eldridge, 1860.
Wiegand Dometa. Alexander von Humboldt and Samuel Taylor Coleridge: The Intersection of Science and Poetry // Coleridge Bulletin, 2002.
Wiley Michael. Romantic Geography. Wordsworth and Anglo-European Spaces. London: Palgrave Macmillan, 1998.
Wilson Alexander. Life and Letters of Alexander Wilson. Clark Hunter (ed.). Philadelphia: American Philosophical Society, 1983.
Wilson Jason (ed.). Alexander von Humboldt. Personal Narrative. Abridged and Translated. London: Penguin Books, 1995.
Wilson Leonard G. Charles Lyell: The Years to 1841. The Revolution in Geology. New Haven and London: Yale University Press, 1972.
Wolfe Linnie Marsh. Son of Wilderness. The Life of John Muir. New York: Alfred A. Knopf, 1946.
______. John of the Mountains: The Unpublished Journals of John Muir. Madison: University of Wisconsin Press, 1979.
Wood David F. An Observant Eye. The Thoreau Collection at the Concord Museum. Concord: Concord Museum, 2006.
Wordsworth William and Dorothy Wordsworth. The Letters of William and Dorothy: The Middle Years. Ernest de Selincourt (ed.). Oxford: Clarendon Press, 1967–1993.
Worster Donald. Nature’s Economy. The Roots of Ecology. San Francisco: Sierra Club Books, 1977.
______. A Passion for Nature. The Life of John Muir. Oxford: Oxford University Press, 2008.
Wu Duncan. Wordsworth’s Reading, 1800–1815. Cambridge: Cambridge University Press, 1995.
Wulf Andrea. Brother Gardeners. Botany, Empire and the Birth of an Obsession. London: William Heinemann, 2008.
______. Founding Gardeners. How the Revolutionary Generation Created an American Eden. London: William Heinemann, 2011.
Wyatt John. Wordsworth and the Geologists. Cambridge: Cambridge University Press, 1995.
Young Sterling James. The Washington Community 1800–1828. New York and London: A Harvest/HBJ Book, 1966.