The Madrona Marsh Preserve Collection (1973-2002) features photographic albums, reports, environmental impact studies, and other materials relating to the management of the Madrona Marsh Preserve, a 44-acre preserve in Torrance, California.
The William E. Warne Papers (1905-2010) documents William E. Warne's career as a leading federal and California official specializing in water reclamation, water resource issues, natural resources, and both international and domestic development. The collection consists of primary correspondence, reports, articles, speeches, and photographs of Warne's service for the United States Department of the Interior.
The California Native Plants Society Collection (1972-2005)includes materials created and collected by amateurs and professionals with an interest in California's native plants who belonged to the state non-profit organization. The collection comprises documents and other materials from the South Coast Chapter of the Society.