Here is an enjoyable piece on the AFL-NFL merger. This piece presents the whole process in a much smoother light than how the merger actually occured, but the key point is there; with rising player salaries, the two leagues could not afford to continue fighting each other for players, and the merger was pushed through.
About the Author: Todd Tobias
Todd Tobias's interest in the American Football League began in 1998, when he wrote his master's thesis about Sid Gillman. He created this site to educate and entertain football fans with the stories of the American Football League, 1960-1969. You can follow Todd and get more AFL history on Twitter @TalesfromtheAFL.