2-year-old Paul Flatley of Northwestern University was named the NFL's Rookie of the Year by what press organization?
1963 Minnesota Vikings season:  22-year-old Paul Flatley of Northwestern University was named the NFL's Rookie of the Year, a first for the fledgling franchise. National Football League Rookie of the Year Award:  The NFL considers the rookie of the year award by the Associated Press (AP) to be its official honor.
Associated Press