Casino history is hiding in familiar objects: playing cards, the logic of...

https://www.blaze-bookmarks.win/casino-history-lives-in-more-than-rulebooks-cards-roulette-wheels-and-slot

Casino history is hiding in familiar objects: playing cards, the logic of single-zero and double-zero roulette wheels, and the turning reels of a slot machine. In 1895, a San Francisco mechanic helped make that last device iconic.