My understanding is that direct Mob control of Vegas casinos is mostly a thing of the past, thanks to corporate interest, the decline of the Teamsters, and the success of the FBI investigations in the seventies and eighties.

I can't remember for sure right now but in the book "Gaspipe", Casso claims to have acted as a bagman for NY Families' cut of casino skim. I don't remember what year that supposedly was.

Other good books are "The Outfit" and "Supermob" by Gus Russo.

Although for me his arrogance spoils some of the reading, you might also want to check out "Accardo: The Genuine Godfather" or "The Enforcer" by former (now deceased) FBI agent William Roemer.

The book "Double Deal" by former chief of Police, mob associate, murderer and bagman Michael Corbitt has some good info about how things work from a lower level. He details how the mob shuffles its couriers around on different routes or changes the amounts expected, all in order to try to find and deal with people skimming the skim.

Finally, although it's not about Vegas, the best book I ever read on the skim and the various points of connection between the upperworld and the underworld was "The Boardwalk Jungle" by Ovid DeMaris, which discusses the various criminal elements involved in the Atlantic City casinos.

Hope this helps.

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.