French lexicographer and philosopher Émile Littré died #OTD in 1881.
He is best known for his comprehensive work on the French language, the "Dictionnaire de la langue française". This dictionary remains a cornerstone of French lexicography, known for its comprehensive treatment of the language, including historical usage, etymology, and quotations from literature.
Comment j'ai fait mon dictionnaire de la langue française, dans Études et glanures, 1880:
https://gallica.bnf.fr/ark:/12148/bpt6k50765h/f406.item