Category
page 11863 non-fiction books

Utilitarianism
1861 essay by John Stuart Mill

Man's Place in Nature
essay by Thomas Henry Huxley

Vorlesungen über Zahlentheorie
several textbooks of number theory

Weisthümer
Weisthümer is a collection of partially oral legal traditions from rural German-speaking Europe
by Jacob Grimm, published in four volumes (1840–1863), intended for use in research into Germanic law.
The Naturalist on the River Amazons
book by the British naturalist Henry Walter Bates