Darmstadt - Düsseldorf
- Darmstadt
University and State Library
- Darup (see Specials: Handschriftencensus Westfalen)
St. Fabian and Sebastian
- Dessau
City Library (today Main Library of the Anhalt State Library)
State Library (today Scientific Library of the Anhalt State Library)
- Detmold
Lippe State Library
North Rhine-Westphalia State Archives and North Rhine-Westphalia Personal Archives Westphalia-Lippe (see Specials: Manuscript Census Westphalia)
- Dillingen
Study Library
- Dinslaken (see Specials: Manuscript Census Rhineland, Vol. 1)
City Archives
- Donaueschingen
Fürstenberg Court Library (now dissolved) see BLB Karlsruhe and WLB Stuttgart
- Dorsten (see Specials: Manuscript Census Westphalia)
Franciscan, City Archives, St. Agatha
- Dortmund (see Specials: Manuscript Census Westphalia)
Catholic Provost Church Parish of St. John Baptist, City and State Library, City Archive
- Dresden
University and State Library
- Düren (see Specials: Manuscript Census Rhineland, Vol. 1)
City and District Archives
- Düsseldorf
University and State Library Main State Archives, Art Academy, Art Museum, private property, St. Lambertus Parish Archives University and State Library; Düsseldorf-Gerresheim: Kath. Pfarrei St. Margareta (see Specials: Manuscript Census Rhineland, Vol. 1).
- Duisburg (see Specials: Manuscript Census Rhineland, Vol. 1)
Private property
City Library
Duisburg-Hamborn: Catholic Provost Parish of St. Johann
Duisburg-Laar: Catholic Parish of St. Ewaldi
