A McKinney man is finally getting his high school diploma—73 years late.Ridgell McKinney is the great-great-grandson of Collin McKinney. If that name seems familiar, it's because both Collin County and the city of McKinney are named for him.Ridgell has deep roots in North Texas. He fought in World War II not long after he left McKinney Boyd High School, and went on lead a fulfilling life. Full story....