The League That Didn't Exist - Gary Webster - Bog

Tells the story of the All-America Football Conference, which was the only challenger to the NFL (except for the American Football League of the 1960s) to survive more than two seasons. It takes a brief look at all of the NFL's challengers (and would-be challengers) from 1926-1945, and then explains how the All-America Conference overcame obstacles that proved too difficult for others.