Columbia subject headings:
Harvard subject headings:
Archivists--Germany--Marburg--Biography.
Historians--Germany--Biography
Könnecke, Gustav, 1845-1920.
Marburg (Germany)--History.
Princeton subject headings:
Archivists--Germany--Marburg--Biography.
Historians--Germany--Marburg--Biography.
Könnecke, Gustav, 1845-1920.