- Author: Arthur John Hubbard
- Language: English
- Author: John Hubbard, Barbara Burke Hubbard
- Language: English
- Year: 2015
- Author: John Hubbard, Barbara Burke Hubbard
- Language: English
- Year: 2015
- Author: John Hubbard
- Language: English
- Year: 1998
- Author: Preston John Hubbard
- Language: English
- Year: 1990
- Author: John Hubbard
- Language: English
- Year: 2007
- Author: John Hubbard
- Language: English
- Year: 2000
- Author: John Hubbard
- Language: English
- Year: 2007
- Author: John Hubbard
- Language: English
- Year: 2000
- Author: John Hubbard
- Language: English
- Year: 2007