While it's not an article on the history of the NWA, this article on labor exploitation in wrestling covers the NWA's history in some depth and made me realize that, frighteningly, the NWA in its heyday was even more ruthless than Vince McMahon, if you can imagine that. It was a legit cartel and did some extremely sleazy, even illegal shit. Anyone who prattles on about how great the territory days were can go eat a dick. Normally I don't care for Salon articles, but this one is fascinating, well-researched, and absolutely recommended. Keep in mind, though, that this is a Salon article; there is much complaining about deregulation, much complaining about a lack of federal oversight of the wrestling industry, some unnecessary swipes at Republicans, it loses its focus towards the end, and it goes on for too long. Other than that, it's a decent article with a great first half.