The Eastern California Museum was founded in 1928, and has been operated by the County of Inyo since 1968. The mission of the Museum is to collect, preserve, and interpret objects and information related to the cultural and natural history of Inyo County and the Eastern Sierra, from Death Valley to Mono Lake. The Museum collection is held in public trust, and a computerized database with over 15,550 records is used to manage the Museum's extensive collections. In addition to those artifacts, the Museum also houses about 27,000 historic photographs of the Eastern Sierra region, the majority of which date from the late 1800s through the 1950s. The Museum also maintains archives that make up the History Files, and the Family Files, both of which contain newspaper clippings, original documents, and other information about the towns, people, and subjects that have played a role in the history of Inyo County and the Eastern Sierra.
The Eastern California Museum's digital collection at California Revealed consists of moving images, audio recordings, and text materials from the 1910s to the early 2000s. The collection includes oral histories, home movies, and promotional films related to the Sierra Nevada Mountains, resource management, the Owens Valley, the Eastern Sierras, mining and more.