I contacted him. He kept a scrapbook, artwork, and a late-copied workprint VHS tape from the original U-Matic. Of which more later.

Williams probably didn't destroy anything, but the people in Korea did ... sadly. He says in his book that Roy Naisbitt (his longtime assistant) encouraged him to keep a lot of stuff he would otherwise have destroyed.

Here is Erik Northfell's cover for The Thief .... we figured it would make a good cover for the workprint ... which will shortly be available in Erik's version anyway ...

http://orangecow.org/thief/ThiefWorkprintCover-ErikNorthfell.png