Luxemburg, Rosa, 1871-1919

The collection contains autograph letters collected by Gertrude Lobbenberg, including letters written and signed by Berthold Auerbach, Béla Bartók, Ludwig Börne, Georg Morris Cohen Brandes, Heinrich Heine, Julius Korngold, Ferdinand Lasalle, Max Liebermann, Rosa Luxemburg, Arthur Schnitzler, and Stefan Zweig.

This collection holds the papers of the historian and author Helmut Hirsch, which focus primarily on his professional activities and connections as well as some material pertaining to his immigration experiences. Prominent in this collection is his extensive professional correspondence. Other materials included here are some personal correspondence, unpublished manuscripts, notes and research material.