It looks like the Rock Island Technical Society has finally updated their webpage. They've even included a section from their quarterly newsletter vis-a-vis modeling (up to Q2 2002).

A timetable from the 1970's is also available that I hadn't seen before. Very kewl, I'm currently revising my ROCK schedule to conform to their numbering system at the very least, and as much as possible the departure times.

http://www.simpson.edu/~RITS/