Bert Bell, NFL commissioner, is seen in New York, Jan. 6, 1947. (AP Photo/Anthony Camerano)

Bert Bell, head coach and head of the Eagles talks to his squad, July 26, 1939. Bert Bell, Jr. is shown sitting with a player. (Associated Press)

Bert Bell, left, NFL commissioner, talks with club officials at press conference in New York, Jan. 16, 1952, prior to the opening of three-day annual meeting of the league. From left are: Bell, Walter Wolfner, general manager of the Chicago Cardinals; Daniel F. Reeves, president and owner of the Los Angeles Rams; and Anthony J. Morabito, co-owner of the San Francisco 49ers. (AP Photo/John Rooney)

NFL owners and coaches meet with Bert Bell, seated at center, league commissioner, July 20, 1947 in Pittsburgh. Left to right, seated: Art Rooney, Pittsburgh Steelers; Tim Mara, New York Giants; Bell; Curly Lambeau, Green Bay Packers; Fred Mandel, Jr., Detroit Lions. Standing: Dan Reeves, Los Angeles Rams; Walter Halas, Chicago Bears; Jack Mara, New York Giants; Roy Benningsen, Chicago Cardinals; George Marshall, Washington Redskins; Al Ennis, Philadelphia Eagles; Ralph Brizzolara, Chicago Bears. (AP Photo/Daniel P. Jacino)

Ken Strong, left, New York Giants football team back, receives two suitcases from Bert Bell, National Football League Commissioner, during ceremonies celebrating "Ken Strong Day" at the Polo Grounds in New York, November 24, 1946. In addition to the suitcases, Strong received several thousand dollar bonds and other assorted gifts from fans. Standing left to right, are; Ken Strong, Bert Bell, Herman J. Bergasse, chairman of the Ken Strong Fans Committee; and Irving Cohen, vice chairman. The Giants defeated the Pittsburgh Steelers, 7-0. (Associated Press)

Bert Bell. center, of Philadelphia receives congratulations in Chicago, Jan. 20, 1949, from George Halas, Jr., left, and Charles W. Bidwell, Jr., after being presented with a ten-year contract to continue to serve as commissioner of the NFL. The youths are sons of the owners of the Chicago Cardinals, respectively. (Associated Press)

Art Rooney Sr., left, owner of the Pittsburgh Steelers and NFL commissioner Bert Bell go over draft lists in this Dec. 18, 1947 photo in Pittsburgh. Tear away their green and silver exterior, silence their "Fly, Eagles, Fly" theme song, and the Philadelphia Eagles are revealed to bleed black and gold of the Steelers, all because of an enormous but largely forgotten transaction that set the course for two of the NFL's most renowned franchises. (Associated Press)

Bert Bell, new NFL president, talks on the telephone at his Narberth, Pa. home, Jan. 22, 1946, while his children, Bert Jr., 10, left, Upton, 8, and Mary Jane, 4, listen intently. (Associated Press)

Bert Bell, commissioner of the NFL, holds a football near photo mural of Yankee Stadium in the New York Yankees' downtown office, Jan. 27, 1956. The New York Giants of the NFL announced they would move from the Polo Grounds in New York to Yankee Stadium, effective in the coming fall. From left are: Wellington Mara, Giants' secretary; George Weiss, Yankees' general manager; Jack Mara, Giants' president, and Bert Bell. (AP Photo/Harry Harris)

Doak Walker, right, Southern Methodist University All-America back, receives the Maxwell Club's Award as the outstanding football player of 1947 in at Philadelphia, Jan. 13, 1948. Presenting the award is Bert Bell, president of the Maxwell Club. (Associated Press)

Cincinnati Benglas quarterback Ken Anderson, left, and USC running back Marcus Allen display their Bert Bell Awards presented by the Maxwell Club in Philadelphia, Feb. 10, 1982. Anderson was named the top pro football player and Allen the best college player. According to the Maxwell Football Club homepage, following the death of its founder Bert Bell in 1959, The Maxwell Football Club�s Professional Player of the Year Award was instituted and it presented the Bert Bell Trophy. (AP Photo/Rusty Kennedy)

Miami Dolphins quarterback Dan Marino holds the Bert Bell Award which is presented by the Robert W. Maxwell Memorial Football Club to the NFL's outstanding player of the year, Tuesday, Feb. 19, 1985, Philadelphia, Pa. (AP Photo/Amy Sancetta)