No one who has seen the iconic photograph can ever forget its emotional pull: a grinning Gene Stallings, hoisted into the air at midfield in the arms of his lifelong mentor, Paul "Bear" Bryant, moments after the final gun sounded for the 1968 Cotton Bowl. Stallings's upstart Aggies delivered an unbelievable upset of Bryant's Crimson Tide, a team that had dominated its SEC rivals under the leadership of a young quarterback who later achieved NFL fame,...