Author / Collaborator : Landsberg, Ernst
Author / Collaborator : Landsberg, Ernst
Brief an Herr Geheimrat [Ernst Landsberg]
Berlin-Charlottenburg, 14.09.1914 [14. Sept. [19]14]Brief an Herr Geheimrat [Ernst Landsberg]
Berlin-Charlottenburg, 22.01.1921 [22. Jan. 1921 ...]Brief an Herr Professor [Ernst Landsberg]
Berlin-Charlottenburg, 14.03.1911 [14. März 1911]Brief an Herr Professor [Ernst Landsberg]
Bonn, 26.06.1908 [26/6 [190]8.]Brief an Hr. Professor [Ernst Landsberg]
Köln, 20.11.1906 [20/XI 1906.]Brief an Hr. Professor [Ernst Landsberg]
Bonn, 14.01.1909 [14/1 [190]9]Brief an Hr. Professor [Ernst Landsberg]
Bonn, 30.11.1910 [30/XI 1910.]Brief an Hr. Professor. [Ernst Landsberg]
Bonn, 22.06.1908 [22/6 1908]Briefkarte an Hr. Professor. [Ernst Landsberg]
Bonn, 19.01.1909 [19/1 [190]9]Postkarte an Hr. Professor [Ernst Landsberg]
Köln, 15.07.1908 [15.7.[19]08 [Poststempel]]Brief an Hr. Professor [Ernst Landsberg]
Bonn, 27.08.1911 [27/VIII 1911.]Brief an Professor Dr. Ernst Landsberg
Marburg, 22.12.1905 [den 22. Dezember 1905.]Brief an Professor Dr. Ernst Landsberg
Marburg, 04.02.1906 [den 4. Februar 1906.]Brief an Professor Dr. Ernst Landsberg
Marburg, 17.02.1906 [den 17 Februar 1906.]Brief an Professor Dr. Ernst Landsberg
Marburg, 14.10.1905 [den 14. Oktober 1905.]Brief an Professor Dr. Ernst Landsberg
Marburg, 24.08.1905 [den 24. August 1905.]Brief an Professor Dr. Ernst Landsberg
Marburg, 02.09.1905 [den 2. September 1905.]Brief an Professor Dr. Ernst Landsberg
Marburg, 19.09.1905 [d. 19/9. [19]05]Brief an Professor Dr. Ernst Landsberg
Marburg, 13.07.1906 [den 13. Juli 1906]Brief an Professor Dr. Ernst Landsberg
Marburg, 25.01.1906 [den 25. Januar 1906.]