Pictorial History of the Wild West (1983), by James D. Horan, and Paul Sann. Reading this chiefly because of a bizarre question I've had for years, but haven't found the answer to: What was the 5th card in Wild Bill Hickok's last poker hand? So far, I've seen claims of the Queen of Hearts, Jack of Diamonds, Nine of Hearts, and that he had already discarded, and hadn't received his 5th card yet. Nothing definitive.