Not sure if you saw it, but you got a nice write-up in Gaming Today:

But for sheer volume and determination, we liked "Casino Slot Cards – A Personal Collection" presented by Jerry Birl. The display included 768 slot cards – each embossed with Mr. Birl’s name – from casinos all over the United States and Canada. In all, Mr. Birl has a total of 1,500 cards in his collection. It had to take some planning to find all those casinos, travel there and register for each slot club card. (Just the thought of packing and unpacking for each of those trips tires me out.)

http://gamingtoday.com/articles/article/26472-Chips_Ahoy