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[Flynn4Heisman]

A 1916 survey commissioned by the U.S. Commission of Education stating that the game was the "occasion for the revival of feuds, charges and countercharges (and) the reassertion of differences and criticisms," led to a halt in the series. After a brief two-year revival, the Hawkeyes used a resolution in the state Legislature to justify not renewing the series.
The schools' athletic directors agreed to a two-year contract to play starting in 1977, but when Iowa found out that its athletic director had actually committed to six games, the school refused to sign the deal.
An arbitrator was brought in to resolve the dispute, forcing Iowa to honor the six-game contract.

What the hell?