A sad day indeed. My sincere condolences to Bill's friends and family.
We often talk about needing ambassador's to the O-gauge hobby in order to promote the hobby and its finer qualities. Bill was that ambassador and much more. No matter when I saw Bill at the OGR booth at either Allentown or York he had a smile and genuine interest in what you were trying to do with your layout and offered guidance when asked. Bill projected enjoyment in what he was doing in the hobby; be it working at a train meet, writing articles for OGR or updating the OGR community via his website with pictures and text of other members' layouts visited. That enjoyment was often contagious. Bill will be sadly missed.
It is a sad day.