The talented archivists at Calisphere have curated a range of subjects on California history as part of their Local History Mapped series. This particular feature takes on Disasters in the Golden State by looking into the way disasters have affected buildings during the 19th and early 20th centuries. It's a great subject and visitors can use the View Map feature to explore the state from San Francisco to San Diego. The homepage provides interested parties with a brief synopsis of each major disaster type, along with resources for teachers, including class activities based on thematic collections of these images. Additionally the site includes a helpful document titled "How to Use Local History Mapped" and some complementary links from the Joint Committee on Geographic Education.