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. 

Gregor Piatigorsky, the great master cellist of the 20th century, left a legacy of great music through his concerts, recordings, and films, and through his students. He also left a personal collection of approximately 19,000 items including photographs, music manuscripts, correspondence, concert programs, clippings, test pressings, commercial recordings, books, and ephemera. After his death…