USC recognizes their 1928 National Championship

... even though GT was the clear champion. Ok, I'm biased. Check it out here:

USC has long claimed its first national championship in football in 1928, when-like in 1939-it was named only by the Dickinson System (Georgia Tech and Detroit were picked No. 1 by that season's eight other selectors). Yet for some undetermined reason, USC never acknowledged 1939 among its national titlists...until now.

Also interesting ending to the story, which of course is the root cause of years of controversy on true "champions":

The NCAA does not conduct a national championship in Division I football and is not involved in the selection process. Over the years, there have been nearly 30 selectors of national champions using polls, historical research and mathematical rating systems. It is up to individual schools to determine whether a No. 1 selection in any of these systems merits a national championship claim. It is not unusual for more than one school to claim a football national championship in the same year (as USC and LSU did in 2003).