Barry, I have no doubt that we are missing a few AC cards. Pat lives in Colorado and I live in Las Vegas. Neither one of us has had access to a superior AC collection that we could study for long enough. (Our personal AC collections are pretty good, but not great.) If you have anything that you don't think is listed, then send front and back scans or xeroxes to Pat. We both keep track, but I'm out of town more than she is! As for the Taj 50 Plus card - I agree it's a variation if the "50 Plus" is pre-printed by the manufacturer. I don't have the card, so I can't say. Thanks for buying the book and I hope you get a lot out of it. It's not perfect, but I honestly believe that it's as thorough and accurate as anyone could reasonably expect it to be! We received a lot of help from fellow collectors last year and look forward to further assistance. That's the only way we can ever hope to get everything listed. Happy New Year, Steve