- Author: Robert Stawell Ball (editor), Harry Gravelius (editor)
- Language: German
- Year: 1889
- Author: LTC Robert L. Ball
- Language: English
- Year: 2014
- Author: Robert Stawell Ball
- Language: English
- Year: 2017
- Author: Konrad Heldmann, Robert J. Ball
- Language: German
- Year: 1982
- Author: Robert Stawell Ball
- Language: English
- Year: 2010
- Author: Robert E. Ball
- Language: English
- Year: 2003
- Author: Robert Stawell Ball
- Language: English
- Year: 2010