For generations of Penn Staters, certain traditions define a trip to Happy Valley. There's the walk through campus on football Saturdays. The photos at the Lion Shrine. The return to favorite classrooms and familiar landmarks. And somewhere along the way, for most Penn Staters, there's a stop at Berkey Creamery. For Jim Brown, helping preserve that tradition, and the people he’s met along the way, became the most meaningful part of his career. B…