Painting from the Cannes brochure - Eddie Bowers just sent it to me.
UPDATE: Larger scan courtesy of Richard Hayes!
http://orangecow.org/thief/cannesbrochurebig.jpg
http://orangecow.org/thief/cannesbrochurebig2.jpg
http://orangecow.org/thief/Thiefscript.RTF
Here's the original screenplay, courtesy again of Eddie Bowers, a really interesting read - lot of stuff in there that didn't make it. Thief and Yumyum being transformed by the witch over and over, the dragon at the end, Grand Vizier Goblet, the Princess singing a song (!) which might have helped the no-song quotient for Calvert ... the story was always changing, wasn't it ...
No sign of Tack fighting with Zigzag though. He fights with the dragon. And the nurse says "ass"!