The following was said by Stephen Worth at:
http://www.animationarchive.org/2005/11/media-spumco-vincent-waller.html
"John Kricfalusi generously donated the archives of Spumco to
ASIFA-Hollywood after Ren & Stimpy: Adult Party Cartoon wrapped last
Fall. Included in the collection were files containing drawings grouped
by artist."
Now, when "donated the archives" is said, I wonder if that means the
totality of Spumco's archives, or a portion of Spumco's archives.
I think it's better to ask here than at the blog because while webboards
are often transitory, usenet is forever...
(Note the page has some nice images of Vincent Waller art from RnS, and
more similar posts are expected).