Don't forget the big 42-0 win in 1885 over the Peninsular Cricket Club team at the Peninsular Cricket Club Grounds. They count victories against the Chicago Harvard School (a high school in Chicago), the Detroit Athletic Club (a private social club), and Ann Arbor High School, among others.
They also lost to the Cleveland Athletic Club by a score of 8-4 in 1891. *fist pump*
Check it out for yourself by clicking on the season records to see the individual results at this URL: http://en.wikipedia.org/wiki/List_of_Michigan_Wolverines_football_seasons.