My condolences to Barry's family and friends. All are in my prayers and thoughts. I had the honor of meeting Barry once at York on one of the OGR "field trips". I was just getting my feet wet in DCS and asked him a few questions about the system. He phrased his answers in such a way that this DCS amateur understood and has had minimal problems afterward. I also have both books and he wrote them in the same manner.
While he will be missed, he will not be forgotten. Requiescat in pace, Barry, and God Bless!