I’ve been collecting blackjack books since the early 1980s. It’s pretty intensive but I am sure it is not the largest. If your collection is larger I would love to hear your comments. I recently did some organizing in my office and found a few duplicate books – which you can check out on my Amazon Marketplace account at https://www.amazon.com/seller/bjrnet . The photo below is just the corner of my office. It doesn’t include poker books, blackjack software and my other collections.