3 Titres in Der Gral
zu den FilteroptionenBrief an Professor [Oskar Walzel]
Münster (Westf), 02.04.1930 [2.4. [19]30]Brief an Professor [Oskar Walzel]
Münster (Westf), 02.06.1930 [2.6. [19]30]Brief an Professor [Oskar Walzel]
Münster (Westf), 08.07.1930 [8.7. [19]30]