One of the most interesting, informative books I've read is "The Boardwalk Jungle" by Ovid Demaris: highly recommended.
It talks in large part about how the mob was involved when casinos came to Atlantic City.
A tale of corruption, greed, and hiding the ball: typical NJ.
My dad worked for Bally's in the early years: nobody fucked with the mob back then, it seems pretty much everybody was either on the take or looked the other way.
The notion employed in both AC and LV that having corporations own casinos and not mobsters will end mob involvement in casinos is, was and always will be a pipe dream.