- Johann Gustav Droysen: Speech to the Frankfurt Assembly, 1848
- Friedrich Wilhelm IV, King of Prussia: Proclamation of 1849
- Otto von Bismarck: Letter to Minister von Manteuffel, 1856
- Field Marshal Helmuth von Moltke: 1866
- Otto von Bismarck: 1866
- The Imperial Proclamation, January 18, 1871