As pointed out in Locus

[kinzel]

I was on a panel with David Hartwell at Balticon and discovered in the latest Locus a letter he'd sent ... which I read immediately. Basically, the letter pointed people to this site about Paul Williams, of Crawdaddy fame... who is disabled and needs help.

http://paulwilliams.com/

and do read this:

http://paulwilliams.com/biography.html

Sigh, we're doing what we can