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. 

Founded in 1952, the ONE Archives at the University of Southern California Libraries in Los Angeles is the oldest continuously-operating LGBTQ organization in the United States and the largest archive in the world dedicated to collecting and preserving LGBTQ materials. Our collection comprises over 33,000 volumes of books and monographs; over 13,000 titles of LGBTQ periodicals; 700 manuscript and…