This series contains letters that Lowe received and, in many instances, carbon copies of letters that he wrote. Much of the correspondence is from other members of the faculty of the New School for Social Research and from other academic economists, but the series also includes many letters written by Lowe's daughters and grandchildren.
This series contains primarily correspondence dealing with Hula's publications and includes correspondence with publishers, newspapers and periodicals, as well as colleagues. Individuals represented in the correspondence include colleagues at the New School for Social Research, such as Arnold Brecht, Eduard Heimann, Hans Simons and Hans Staudinger, as well as legal scholars and contemporaries such as Leo Gross, Hans Kelsen, Hans J. Morgenthau, Kurt Riezler, and Kurt von Fritz.
The correspondence in this series consists almost exclusively of photocopies of Graf's letters to and from prominent individuals collected by Mrs. Graf after his death. (Letters of Gisela Graf which continue Graf's correspondence after his death are also included in this series.) Included is a small amount of correspondence with family members, as well as correspondence with: Johannes R. and Lilly Becher, Siegfried Bernfeld, Heinrich Böll, Hermann Broch, Ferdinand Bruckner, Albert Ehrenstein, Albert Einstein, Hans Magnus Enzensberger, Lion and Marta Feuchtwanger, Gustav and Else Fischer, Bruno Frank, Leonhard Frank, Günter Grass, Hugo Hartung, Th. Th. Heine, Hermann Hesse, Franz Jung, Prinz Hubertus zu Löwenstein, Erika, Heinrich, Katja, Klaus and Thomas Mann, Robert Neumann, Rudolf Olden, Rolf Recknagel, Erich Maria Remarque, Will Schaber, Dorothy Thompson, Sergei Tretiakov, Fritz von Unruh, Berthold Viertel, Ernst Waldinger, Wendell L. Wilkie.
