Places
- Florenz
- Letter from: 29.9.1911, Milano
- Letter from: 1.10.1911, Leipzig (Germany)
- Letter from: 1.10.1911, Milano
- Letter from: 5.10.1911, Florenz
- Letter from: 13.10.1911, Florenz
- Letter from: 25.11.1911-26.11.1911, München
- Letter from: 9.6.1913, Berlin (Germany)
- Letter from: 27.2.1914, Berlin (Germany)
- Letter from: 5.3.1914, München
- Letter from: 13.3.1914, Berlin (Germany)
- Letter from: 14.3.1914, München
- Letter from: 20.3.1914, Berlin (Germany)
- Letter from: 11.4.1914, Tremezzo (Italy)
- Letter from: 18.4.1914, München
- Letter from: 20.4.1914, Tremezzo (Italy)
- Letter from: 26.4.1914, München
- Letter from: 26.4.1914, Tremezzo (Italy)
- Letter from: 29.4.1914, Tremezzo (Italy)
- Letter from: 18.3.1923, Kairo
- Letter from: 25.3.1923, vor Brindisi
- Letter from: 29.10.1931, Ajaccio
- Letter from: 11.9.1932, Vevey (Switzerland)
- Letter from: 21.9.1932, Poveromo (Italy)
- Letter from: 22.9.1932, Florence (Italy)
- Letter from: 24.9.1932, Assisi (Italy)
- Letter from: 28.9.1932, Milan (Italy)
- Letter from: 17.2.1933, Zurich (Switzerland)
- Letter from: 29.12.1934, Milan (Italy)
- Letter from: ohne Datum, Berlin
- Frankfurt
- Letter from: 1.4.1913, Königsberg (Germany)
- Letter from: 2.6.1913, Berlin (Germany)
- Letter from: 10.6.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 19.6.1922, Frankfurt
- Letter from: 8.7.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 11.7.1922, Charlottenburg
- Letter from: 1.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 3.8.1922, Charlottenburg
- Letter from: 5.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 19.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 24.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 25.8.1922, Charlottenburg
- Letter from: 29.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 31.8.1922, Schönwald im Schwarzwald (Germany)
- Letter from: 22.5.1929, Rottach-Egern (Germany)
- Letter from: 2.6.1932, Zürich
- Letter from: 15.5.1935, Jerusalem
- Letter from: 24.5.1935, Jerusalem
- Letter from: 24.8.1953, San Francisco (Calif.)
- Frankreich
- Letter from: 4.8.1917, Ilipan
- Letter from: 24.6.1918, Charlottenburg (Berlin;Germany)
- Letter from: 29.6.1918, Pont du Hem
- Letter from: 17.7.1918, Port du Hem
- Letter from: 19.7.1918, Pont du Hem
- Letter from: 6.8.1918, A.
- Letter from: 21.8.1918, V.
- Letter from: 30.5.1933, Cavaliere (France)
- Letter from: 30.3.1935, London
- Letter from: 30.6.1935, vor Creta
- Fürstenberg
- Letter from: 13.1.1925, Fürstenberg (Germany)
- Letter from: 15.1.1925, Fürstenberg (Germany)
- Letter from: 19.1.1925, Fürstenberg (Germany)
- Letter from: 21.1.1925, Charlottenburg
- Letter from: 27.1.1925, Fürstenberg (Germany)
- Letter from: 29.1.1925, Fürstenberg (Germany)
- Letter from: 1.2.1925-3.2.1925, Fürstenberg (Germany)
- Letter from: 11.2.1925, Fürstenberg (Germany)
- Letter from: 12.2.1925, Charlottenburg
- Letter from: 25.4.1927, Fürstenberg (Germany)
- Letter from: 11.5.1927, Fürstenberg (Germany)
- Letter from: 11.5.1927, Fürstenberg (Germany)
- Letter from: 16.5.1927, Fürstenberg (Germany)
- Letter from: 20.5.1927, Fürstenberg (Germany)