Jacob and Wilhelm Grimm began the Deutsches Wörterbuch in 1838. The first installment appeared on 1 May 1852. Jacob Grimm died on 20 September 1863 while he was working on the entry Frucht, fruit. The dictionary was finished in 1961, after 123 years. It has 33 volumes, 34,824 pages and about 320,000 headwords.