Gilly has posted an announcement and very nice picture (of Odetta) over at his blog, and also at http://www.downthehighway.info/index.htm. I can't seem to get the direct "bobdylan.com" link to work, so I'm going to give the roundabout way through "downthehighway.com":

http://www.downthehighway.info/apps/forums/topics/show/125635-r-i-p-odet...

There is also an article about her, and a "Last Word" video interview with Odetta, at the NYTimes site (video is in the midst of the article):

http://www.nytimes.com/2008/12/03/arts/music/03odetta.html/partner/rssny...

Odetta is the only friend of Dylan that I can think of, that literally gave him shelter from the storm; shelter from the big freeze of '62. I wish she would not have gone so soon.