Contact 2005
The 22nd annual Contact conference was held in March 2005 at NASA Ames, in northern California's Silicon Valley. About 150 people participated, with many excellent speakers, the university level SOLSYS project and, of course, the High School level COTI HI first-contact encounter.
Here's a link to the official Contact home page.
Here are my photos of the conference, along with links to the participant's own web sites.