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Neill Armstrong, a football All-American at what was then Oklahoma A&M in 1945 and ’46, died on Wednesday at the age of 90.

Oklahoma State announced his death on Thursday, August 11.

Armstrong went on to become a player, assistant coach and head coach in the NFL.

He was the head coach of the Chicago Bears from 1978 to ’81, then became an assistant for the Dallas Cowboys from 1982 to ’89.

He returned to Dallas as a consultant, as the Cowboys won three Super Bowl titles in the 1990s.

Armstrong helped Oklahoma A&M to the Cotton Bowl in 1944 and Sugar Bowl in 1945 and led the nation in receiving yards in both 1943 and 1946.

He went on to a five-year playing career in the NFL with the Philadelphia  Eagles.

He helped them to NFL titles in 1948 and 1949.