Onward State has the complete letter the family sent this afternoon to the NCAA, but here's the gist:

The estate undertakes this appeal to redress the enormous damage done to Penn State, the State College community, former, current and future student and student athletes, Joe Paterno and certain others involved, as a result of the unprecedented actions taken by the NCAA.

As will become evident in a thorough and impartial review, the NCAA acted hastily and without any regard for due process.