Actually 11 for Nebraska by this measure...
1. 1970
AP, Billingsley, DeVold, Dunkel, FACT*, FB News, Football Research, FW, Helms, National Championship Foundation, Sagarin (ELO-Chess)*
2. 1971
AP, Berryman, Billingsley, DeVold, Dunkel, FACT, FB News, Football Research, FW, Helms, Litkenhous, Matthews, National Championship Foundation, NFF, Poling, Sagarin, Sagarin (ELO-Chess), UPI
3. 1980
FACT*
4. 1981
National Championship Foundation*
5. 1982
Berryman
6. 1983
Berryman, DeVold, FACT*, Litkenhous, Matthews, Poling, Sagarin*
7. 1984
Litkenhous
8. 1993
National Championship Foundation*
9. 1994
Alderson, AP, Berryman, Billingsley,
FACT*, FB News, FW, National Championship Foundation*, Sagarin (ELO-Chess)*, Sporting News, UPI, USA/CNN, USA/NFF
10. 1995
Alderson, AP, Berryman, Billingsley, DeVold, Dunkel, Eck, FACT, FB News, FW, Matthews, National Championship Foundation, NFF, NY Times, Sagarin, Sagarin (ELO-Chess), Sporting News, UPI, USA/CNN
11. 1997
Alderson, Berryman, Billingsley MOV, DeVold, Dunkel, Eck, FACT, Matthews, National Championship Foundation*, NY Times, Sagarin, Sagarin (ELO-Chess), Seattle Times, USA/ESPN