In <http://languagelog.ldc.upenn.edu/nll/?p=1921> Mark Liberman links to
a video with a transcript and Everett's comments and to Everett's
webpage <http://www.llc.ilstu.edu/dlevere/> with more stuff.
I've just had a quick glance, and it looks interesting, but I don't know
if I'll understand anything of it. Or if I'll have the time to try.
--
Trond Engen