Short answers, pulled from the story.
The Minnesota Vikings and Dallas Cowboys entered the league as new franchises during the 1961 season. These two expansion teams shifted the balance of power across divisions by joining the Western Division and Eastern Division respectively.
The 1961 NFL draft took place at Philadelphia's Warwick Hotel on the 27th of December 1960. The Minnesota Vikings held the first pick and selected halfback Tommy Mason from Tulane University.
Green Bay shut out the New York Giants 37, 0 to win the 1961 title. This decisive victory occurred at City Stadium in Green Bay, Wisconsin on the 31st of December 1961.
Paul Hornung of the Green Bay Packers received Most Valuable Player honors from both the Associated Press and United Press International. Y. A. Tittle of the New York Giants won the Newspaper Enterprise Association award for MVP.
The schedule expanded from 12 games per team to 14 games during the 1961 season. That 14-game format remained unchanged for 17 years following this expansion.