Over the last few years I've been reading and studying Giants history, especially from 1960-1980. Through my Giants readings, I often got side tracked with other interesting information. NFL expansion was a topic I found interesting. 8 teams that were in the league by 1933,The Bears, Cardinals, Packers, Giants, Redskins, Lions and the 2 Pennsylvania teams survived the depression, WWII and other hurdles and are still in the league today. By 1970, the league had grown to 26 teams, more than triple and all related to eliminating completion from rival leagues.