1977: https://en.wikipedia.org/wiki/1977_NCAA_Men's_Basketball_All-Americans
1978: https://en.wikipedia.org/wiki/1978_NCAA_Men's_Basketball_All-Americans
1979: https://en.wikipedia.org/wiki/1979_NCAA_Men's_Basketball_All-Americans
1980 https://en.wikipedia.org/wiki/1980_NCAA_Men's_Basketball_All-Americans
And there was no POY awards in B1G before 1985.