The Mutual UFO Network
- http://www.mufon.com/

The Center for UFO Studies
- http://www.cufos.org/

The National Investigations Committee On Aerial Phenomena
- http://www.nicap.org/

The National UFO Reporting Center
- http://www.nuforc.org/

UFO Hefeweizen
- http://www.ufohefeweizen.com/

Peter Ciluzzi
- http://www.myspace.com/PeterCiluzzi