HNA Regiowiki: http://regiowiki.hna.de/Hauptseite
HNA Regiowiki: Landkreis Kassel or Cassel
German States to 1918 A-E: German States and their leaders
Germans States to 1918 F-M: German States and their leaders. (Includes the Principality of Fulda).
German States to 1918 N-Q: Germans states and their leaders
German States to 1918 M-Z: German States and their leaders
Provinces of Prussia: Hessen-Nassau