The concept of American football games being played on Thanksgiving Day dates back to 1876, shortly after the game had been invented. In that year, the college football teams at Yale and Princeton began an annual tradition of playing each other on Thanksgiving Day. The University of Michigan also made it a tradition to play annual Thanksgiving games, holding 19 such games from 1885 to 1905. The Thanksgiving Day games between Michigan and the Chicago Maroons in the 1890s have been cited as "The Beginning of Thanksgiving Day Football." In some areas, high-school teams play on Thanksgiving, usually to wrap-up the regular-season.