Virtuelle Deutsche Landesbibliographie
"Landesbibliographien verzeichnen die Literatur aller Sach- und Wissensgebiete über ein Bundesland, seine Orte und Regionen und seine Persönlichkeiten und berücksichtigen dabei fast alle Literaturgattungen und Medienarten."
NDC: 234
Deutsche Historische Bibliografie
"The German Historical Bibliography offers extensive search facilities and availability checks in a wide network of libraries. The help text explains the options for optimal use."(Search help)
NDC: 234
Regesta Imperii
"The REGESTA IMPERII (RI) chronologically record all activities evidenced by charters and other sources of the Roman-German kings and emperors from the Carolingians up to Maximilian I (ca. 751-1519) as well as of the popes of the early Middle Ages and High Middle Ages in the form of German “Regesten" (abstracts)."(The project)
NDC: 234