Brief an Kollege [Wilhelm Neuss]
Słupiec, 15.12.1941 [15.12.1941]Brief an Kollege [Wilhelm Neuss]
Słupiec, 12.05.1942 [12.5.1942]Brief an Kollege [Wilhelm Neuss]
Słupiec, 25.03.1942 [25.3.1942]Brief an Kollege [Wilhelm Neuss]
Słupiec, 15.05.1943 [15.5.1943]Brief an Prof. Dr. Wilhelm Neuß in Bonn am Rhein
Słupiec, 10.02.1942 [10.2.1942]Brief an Professor Dr. Wilhelm Neuss, Bonn am Rhein, Humboldstraße 9
Słupiec, 22.04.1938 [22. April 1938]Die Verewigten
Słupiec, 1943 [o.D. [1943]]Postkarte an Freund [Wilhelm Neuss]
Słupiec, 29.08.1943 [29.8.1943]Postkarte an Professor Dr. Wilhelm Neuß, Bonn am Rhein, Humboldtstraße 9
Słupiec, 01.08.1938 [1.8.1938]