Bad Berleburg - Buxheim
- Bad Berleburg Princely Archive
- Bad Gandersheim Abbey Library
- Bad Münstereifel (see Specials: Handschriftencensus Rheinland, vol. 1)Gymnasium Sankt Michael,Kath. parish St. Chrysanthus and Daria
- Bad Neuenahr-Ahrweiler (see Specials: Databases, Manuscript Census RLP) Kath. parish St. Laurentius (Ahrweiler)
- Bamberg State Library
- Barth (see Specials: Eastern States) St. Mary's Church Library
- Bayreuth University Library: Chancery Library Library of the Christian-Ernestinum Humanistic High School Library of the Historical Society for Upper Franconia
- Bergisch Gladbach-Paffrath (see Specials: Handschriftencensus Rheinland, vol. 1) Kath. parish St. Clemens
- Berlin Kirchenbibliothek St. Marien (see Specials: Eastern German States) Kupferstichkabinett der Stiftung Preußischer Kulturbesitz Staatsbibliothek Preußischer Kulturbesitz
- Biberach Hospital Archive
- Bielefeld (see Specials: Handschriftencensus Westfalen)Altstädter Nicolaikirchengemeinde, Ratsgymnasium, Stadtarchiv and Landesgeschichtliche Bibliothek
- Billerbeck (see Specials: Manuscript Census Westphalia) Benedictine Abbey of Gerleve, St. Johannes
- Bocholt (see Specials: Manuscript Census Westphalia)St. George, City Archives
- Bordesholm (see: Kiel, University Library)Chorherrenstift (historical collection)
- Bork (see Specials: Handschriftencensus Westfalen)St. Stephanus
- Borken(Kreis) (see Specials: Westphalia) Kreisarchiv, Propstei St. Remigius (see Specials: Handschriftencensus Westfalen)
- Bornheim-Walberberg (see Specials: Manuscript Census Rhineland, vol. 1) now in the Diocesan and Cathedral Library Cologne Library St. Albert of the Philosophical-Theological College of the Dominicans
- Bottrop (see Specials: Handschriftencensus Westfalen)Museum for Prehistory and Local History
- Brakel (see Specials: Manuscript Census Westphalia)City Archive
- Brandenburg (see Specials: Eastern federal states)Domstiftsarchiv
- Bremen State and University Library
- Brilon (see Specials: Handschriftencensus Westfalen)Propstei St. Petrus und Andreas
- Burgsteinfurt (see Specials: Handschriftencensus Westfalen)Gymnasium Arnoldinum
- Buxheim Charterhouse