I just logged on to share the sad news of Tom's passing if it wasn't already known here.
Instead, a few thoughts about the Dawson:
Through Tom and Judy's work in "52+Joker" and their taking on the daunting responsibility of maintaining the "Hochman's Encyclopedia of American Playing Cards" and its companion Price Guide, they have contributed hugely to the world of Collecting Playing Cards, particularly ones published in America, and we who share in their hobby/passion owe them both a big debt of gratitude for their decades of work within it.
I had the pleasure of meeting the Dawsons at several 52+J conventions from 1996-2000, and their knowledge about playing cards was indeed...encyclopedic. They, along with Bob & Rhonda Hawes, were the first people within the hobby to contact me at my old card-related web site. In fact, before I heard from them, I had wondered if I was the only person in the world with this unusual hobby!
My sincere condolences go out to Judy and the rest of her and Tom's family.