Yesterday, there was an article on SFGate about two new photographic exhibits commemorating the centennial of the 1906 San Francisco earthquake: 1906 Earthquake: A Disaster in Pictures (SF MOMA) and After the Ruins, 1906 and 2006: Rephotographing the San Francisco Earthquake and Fire (Legion of Honor).
Related to this, the Bancroft Library has created an online exhibit that includes an interactive map and a panoramic view of the earthquake destruction. And there is an upcoming exhibit at the California Historical Society featuring photos of the 1906 quake taken by Jack London.