- Author: Duncan Walker Duncan Walker
- Language: English
- Year: 2003
- Author: John M. Walker
- Language: English
- Year: 2002
- Author: Polard Walker
- Language: English
- Year: 1990
- Author: John M. Walker
- Language: English
- Year: 2002
- Author: Gibert Thomas Walker
- Language: English
- Year: 1910
- Author: J.M. Walker R. Rapley
- Language: English
- Year: 2001
- Author: Carl Walker Linda Papadopoulos
- Language: English
- Year: 2005
- Author: J. Samuel Walker
- Language: English
- Year: 2000
- Author: William F. Walker
- Language: English
- Year: 1989