- Author: Columbus Christopher, Reston James
- Language: English
- Year: 2006
- Author: Columbus Christopher, Sean J. Dolan
- Language: English
- Year: 1989
- Author: Columbus Christopher, Mann Charles C
- Language: English
- Year: 2011
- Author: Columbus Christopher, Mann Charles C., Stefoff Rebecca
- Language: English
- Year: 2016
- Author: Columbus Christopher, Loewen James W
- Language: English
- Year: 2006
- Author: Columbus Christopher, Mann Charles C
- Language: English
- Year: 2011
- Author: Columbus Christopher, Mann Charles C
- Language: English
- Year: 2011
- Author: Columbus Christopher, Colomb Cristoforo, Bigelow Bill, Koning Hans
- Language: English
- Year: 1991
- Author: Columbus Christopher, Loewen James W
- Language: English
- Year: 1992