The Museum exhibits American Indian cultural materials, primarily focused on cultures of the Southwestern, Great Basin and Californian culture regions, which were connected by a major trade route from circa 4,000 BP. One of the largest collections is from the California coast and Channel Islands. Seven thousand artifacts are represented, ranging in age from 8-9,000 BP to ethnographic/historic…

The Metropolitan Water District of Southern California manages a library and archival repository documenting the activities of the organization and resources of interest to the greater history of the Los Angeles region.