If the National Football League is now a mammoth billion-dollar enterprise, it was certainly born into more humble circumstances. Indeed, it began in 1920 in an automobile showroom in Canton, Ohio, when a car dealer called together some owners of teams, mostly in the Midwest, to form a league. Unlike the lavish boardrooms in which NFL owners meet today, on this occasion the owners sat on the running boards of cars in the showroom and drank beer from...