In fact, they provide PDF files of some of the ACM tournament booklets (we had one published for each ACM event, giving the rules, participants, hardware, etc, plus the complete results from the previous year's event, and some other interesting stuff. The interesting part is that I have all of these in my "paper files" in my office, so this was kind of a "trip down memory lane" particularly the stuff about the 1983 WCCC in New York City.
Without sounding like a college professor while the site is good, computer chess is quite a large spectrum which has not been covered in depth by that website. Still its a step in the right direction.