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- Author: Samuel P. Hays
- Language: English
- Year: 2006
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- Author: Samuel P. Hays
- Language: English
- Year: 2009
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- Author: Samuel P Hays
- Language: English
- Year: 1970
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- Author: Samuel P. Hays
- Language: English
- Year: 1995
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- Author: Samuel P. Hays
- Language: English
- Year: 2000
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- Author: Samuel P. Hays
- Language: English
- Year: 1998
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- Author: Samuel P. Hays
- Language: English
- Year: 1999
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- Author: Samuel P. Hays
- Language: English
- Year: 1989