Photos of interior of Sands casino?

Hey, folks. I know this is a bit off the beaten track for this group: I'm hoping y'all don't mind. A friend is putting together a (historically accurate) casino night, and is looking for *interior* photos of the old Sands in Las Vegas (edit: from the '60s) -- specifically, the casino and Copa room. Any ideas, or suggestions where to look?

Many thanks!