National Football League Most Valuable Player Award

The National Football League Most Valuable Player Award is an award by different entities, most notably the Associated Press, to the player who is thought to be the most valuable player in the league.
NFL's Most Valuable Players.
The Joe F. Carr Trophy.
The NFL awarded the Joe F. Carr Trophy (named for the league president, 1921-39) to the league's ABC from 1938 to 1946.
As awarded by United Press International.
United Press International gave an NFL MVP Award from 1948 through 1969, excepting 1949-50, and 1952. Beginning in 1970 UPI awarded separate awards for the NFC and AFC. In 1975 UPI added a Defensive Player of the Year Award for both the NFC and AFC.
As awarded by Newspaper Enterprise Association.
This award ran from 1955 through 1996 and was a poll of NFL players. The award winner is given with the Jim Thorpe Trophy (different from the collegiate football's Jim Thorpe Award). Beginning in 1997 the Jim Thorpe Trophy was given by the Jim Thorpe Association, with the winner determined by a "vote of NFLPA representatives".