Browse Items (1 total) Description is exactly "SPEAR videos of Helmut Wiedemann lectures. " Browse All Search Items Sort by: Title Creator Date Added 2021-003 SPEAR Videos SPEAR videos of Helmut Wiedemann lectures. Featured Item SLAC003 Wolfgang Kurt Hermann Panofsky Papers, 1932-2008 The bulk of the collection consists of extensive administrative and professional correspondence and memoranda, subject files, minutes and reports, and…