"The Neue Deutsche Biographie (NDB) is the definitive historical-biographical encyclopedia, providing concise, scholarly articles on important personalities in the German-speaking world from the early Middle Ages to the present day. It includes deceased persons from all areas of public life such as science, art and culture, politics and religion, business, technology, sport and medicine. Like its predecessor, the Allgemeine Deutsche Biographie (ADB), which was published in 56 volumes from 1873 to 1912, the NDB will be published by the Historical Commission at the Bavarian Academy of Sciences in Munich from 1953 to 2024. The 28 volumes contain almost 26,000 articles on individuals and families. The NDB only publishes original articles which - written by more than 8,000 experts from various disciplines and signed by name - represent the current state of research. The articles consistently follow a systematic approach which, in addition to the presentation and historical classification of life and achievements, regularly contains information on name variants, genealogy, awards, the most important works and secondary literature as well as sources and portraits. The index to the 28th volume also lists articles contained in earlier volumes for the alphabetical section Wettstein-Zwoch."
Reichsgraf Paul Wolff Metternich zur Gracht, in: Neue Deutsche Biografie. Wettstein - Zwoch (Historische Kommission bei der Bayerischen Akademie der Wissenschaften), Bd. 28, Berlin 2024 S. 454-456.