Within the City of Pasadena, the Design and Historic Preservation Section reviews plans for construction and building alterations affecting historic properties, conducts historic building surveys, carries out environmental reviews in compliance with state and federal laws regarding the preservation of historic resources, designates properties as landmarks and landmark districts, and directs…

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.