I had the honor to do a separate seminar with Duncan on Saturday at the show where we discussed the history of Williams and the important contributions of a man named Gordon Horlick. Our subject material was the archives of game folders that Greg Berry and I rescued from IPB in 2009 and some scans that Duncan had of the early game designs. The archives I have go all the way back to 1946 and the very first Williams production game "Suspense". We used a power point presentation of around 200 scans of the archives from the game folders. Not sure how I can post them or make them available to everyone but I do have the files uploaded on my google drive.
http://www.pinballnews.com/shows/expo2016/index.html-James