Bill *IS* one of my favorite people in the hobby as we both share a love for old music (50's-70's -- in other words, when it was still music) and old radio air checks and knowing about that music.
If you talk to many of the older dealers there is a correlation between them and liking and knowing about the "old-time" rock and roll. A few nationals ago, I remember chatting with a dealer from Colorado (can't remember his name -- but he has an oldies show there) and the next time I talked to Bill at the show we discussed that and he mentioned that he had known the guy for 20+ years and never knew about the shared music love.
Next thing I knew, the 2 of them spent a few hours together planning that guy's radio shows and Bill trying to help him with some records to play
Rich