- Author: Ralph O'Connor
- Language: English
- Year: 2008
- Author: Terry O'Connor
- Language: English
- Year: 2013
- Author: Laura O'Connor, Laura O'Connor
- Language: English
- Year: 2006
- Author: Gary Cohen, John O'Connor, Barry National Toxics Campaign, Barry Commoner
- Language: English
- Year: 1990
- Author: David E. O'Connor, Christopher C. Faille
- Language: English
- Year: 2000
- Author: Mike O'Connor
- Language: English
- Year: 2004
- Author: Charles Teague, Anahad O'Connor
- Language: English
- Year: 2010
- Author: Elizabeth Connor
- Language: English
- Year: 2005
- Author: Craig Stockings, John Connor
- Language: English
- Year: 2013
- Author: Jean E. Howard, Marion F. O'Connor
- Language: English
- Year: 2005