I used to play black jack in Saloon # 10 before it was legal. I did just about as well there and then as I do now. I and a court reporter were sitting at the table chatting with the dealer who was the reporter's friend, when a couple of college age kids came in, taking first and third base. We were playing intermitantly. The dealer stopped the game and asked us to step back into the bar with him. There he told us to leave the game for a few minutes which we did. Maybe 20 minutes later the kids slunk out followed by the dealer. He took us back inside the gaming room and said, "Sorry I had to ask you to leave, but the boys were pulling some stunts. The kid was peeking at my card and then signalling his friend as to his cards and mine if he could see it. I wanted you out of there so I could deal with it. But it took me nearly a half hour to break them cheaters."
In Deadwood in the 60's we didn't nee a gaming commission to control the games.