Grateful Dead Fans:

Charlie at Bloggerythms was nice enough to point this out to me, looks interesting:

The Grateful Dead Archive documents the band's creative activity and influence in contemporary music history from 1965 to 1995, including the phenomena of the Deadheads, the band’s extensive network of devoted fans, and the band’s highly unusual and successful musical business ventures. The Archive contains original documents, clippings, artifacts, photography, posters, audio and video recordings, publications about the Dead and its individual members, its tours and performances, recordings and productions, and business. Correspondence and art contributed over the years by Deadheads are part of the Archive.

Here is the link for lots more info!