- Www.just-for-openers.org, Bottle Openers, Openers, Can Openers, Corkscrews, Just For Openers ...www.just-for-openers.org/index.html
- International Correspondence of Corkscrew Addicts, The Virtual Corkscrew Museum, Don Bull, Corkmaster ...www.bullworks.net/virtual/icca/icca.htm
- Corkscrew Clubs, The Virtual Corkscrew Museum, Don Bull, Corkmaster ...www.bullworks.net/virtual/virtual/csclubs.htm
