
- 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