Replicas have been built. See Sport Aviation, April 1991, March 1991,
Feb.,1998 and Nov. 1993

Fortunately, I have that cd set of sport aviation. I've been reading
the stories by Budd Davidson about the building of the
Weddell-Williams racer. I had remembered in the back of my mind
reading those articles, but couldn't remember where I had read them.
Thanks for pointing me in the right direction. So it seems drawings do
exist. somewhere.