- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1899
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1905
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1890
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1894
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1888
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1881
- Author: Dietrich Schäfer (ed.)
- Language: German
- Year: 1882