1901: Michigan and Harvard recognized as National Champions
UM recognized by: Billingsley, Helms, Houlgate, National Championship Foundation
Harvard recognized by; College Football Research Association
Yale recognized by: Parke Davis
1902: Michigan recognized as National Champion
UM recognized by: Billingsley, Helms, Houlgate, National Championship Foundation, Parke Davis (tie with Yale)
1903: Michigan and Princeton recognized as National Champions
UM recognized by: Billingsley, National Championship Foundation (tie with Princeton)
Princeton recognized by: Helms, Houlgate, Parke Davis, National Championship Foundation
1904: Michigan and Penn recognized as National Champions
UM recognized by: Billingsley, National Championship Foundation (tie with Penn)
Penn recognized by: Helms, Houlgate, Parke Davis, National Championship Foundation (tie)
1918: Michigan and Pittsburgh recognized as National Champions
UM recognized by: Billingsley, National Championship Foundation (tie with Pittsburgh)
Pittsburgh recognized by: Helms, Houlgate, National Championship Foundation (tie)
1923: Michigan and Illinois recognized as National Champions
UM recognized by: Billingsley, National Championship Foundation (tie with Illinois)
California recognized by: Houlgate
Illinois recognized by: Boand, Football Research, Helms, Parke Davis, National Championship Foundation (tie)
1932: Michigan and Southern California recognized as National Champions
UM recognized by: Dickinson, Parke Davis (tie with Colgate and Southern California)
Colgate recognized by Parke Davis (tie)
Southern California recognized by: Billingsley, Boand, Dunkel, Football Research, Helms, Houlgate, National Championship Foundation, Parke Davis, (tie), Poling, Williamson
1933: Michigan recognized as National Champion
UM recognized by: Billingsley, Boand, College Football Research Association, Dickinson, Helms, Houlgate, Football Research, National Championship Foundation, Parke Davis (tie with Princeton), Poling
Ohio State recognized by: Dunkel
Princeton recognized by: Parke Davis (tie)
Southern California recognized by: Williamson
1947: Michigan recognized as National Champion
UM recognized by: Associated Press *, Berryman, Billingsley, Boand, DeVold, Dunkel, Football Research, Helms (tie with Notre Dame), Houlgate, Litkenhous, National Championship Foundation, Poling
Notre Dame recognized by: Associated Press Helms (tie), Williamson
*Notre Dame was No. 1 in the final AP poll, but Michigan jumped to No. 1 after an unprecedented post-bowl poll recognized Michigan and Notre Dame as National Champions
1948: Michigan recognized as National Champion
UM recognized by: Associated Press, Berryman, Billingsley, Boand, DeVold, Dunkel, Football Research, Helms, Houlgate, Litkenhous, National Championship Foundation, Poling, Williamson
1997: Michigan and Nebraska recognized as National Champion
UM recognized by: Associated Press, National Football Foundation, Football Writer's Association
Nebraska recognized by: ESPN/USA Today Coaches' Poll