Lost LA is a public television historical documentary series that explores Southern California's hidden past through documents, photos, and other rare artifacts from the region's libraries and archives.

Hosted by writer and historian Nathan Masters, each episode of Lost LA brings the primary sources of Los Angeles history to the screen in surprising new ways and connects them to the Los Angeles of today. Much of the past is lost to history, but through the region's archives, we can rediscover a forgotten Los Angeles.

The half-hour series is co-produced by KCET and USC Libraries and is broadcast by KCET, PBS SoCal and other public television stations.