- Author: Walter Kurt Hayman
- Language: English
- Year: 1976
- Author: Walter Kurt Hayman P. B. Kennedy
- Language: English
- Year: 1976
- Author: Walter Kurt Hayman Patrick Brendan Kennedy
- Language: English
- Year: 1976
- Author: Walter Kurt Hayman Patrick Brendan Kennedy
- Language: English
- Year: 1976
- Author: Walter Kurt Hayman P. B. Kennedy
- Language: English
- Year: 1976