1. Henry Jamison
2. Atomic Wrangler Casino Hotel
3. Reference

Banned from gambling in the casino Big Winner, Atomic Wrangler is an unmarked quest in Fallout: New Vegas. You can undertake this side quest by heading to the Atomic Wrangler Casino in Freeside. There, you'll find a brother-sister combo behind the counter. Speak to the man in the group, a dude named James Garret, and begin to pick his brain about all sorts of subjects. So as I entered Freeside recently, I decided to give the Atomic Wrangler casino a try. As I was being a good visitor, made myself a few caps in gambling and finally noticed I could ask for some R&R. The female owner of the club says I'll have to ask one of the girls to come up to my room.

The Wrangler

Henry Jamison

Vegas Vicki

There's no direct equivalent for the Atomic Wrangler across the street from King's, but I wouldn't mind betting (ha!) that it's a tribute to Vegas Vic and his female counterpart Vegas Vicki, big neon cowboy and cowgirl signs on Fremont St.
The Glitter Gulch

Atomic Wrangler Casino Hotel

on the real Fremont St is actually a strip club, which I visited in the interests of research. The Atomic Wrangler sign in the game is an obvious tribute to Slim Pickens in 'Dr Strangelove', riding a nuclear missile out of the bomb bay towards oblivion.
It's getting late: let's check out Freeside's East Gate.

Reference