- Author: Heinrich Metzner
- Language: German
- Year: 1874
- Author: Eduard Pelz
- Language: German
- Year: 1853
- Author: Hermann Hoffmann
- Language: German
- Year: 1871
- Author: August Rauschenbusch
- Language: German
- Year: 1848
- Author: Oswald Seidensticker
- Language: English
- Year: 1893
- Author: Ferdinand Pfister
- Language: German
- Year: 1864
- Author: Maximilian zu Wied
- Language: German
- Year: 1838
- Author: Maximilian zu Wied
- Language: German
- Year: 1841
- Author: Vincent Nolte
- Language: English
- Year: 1854