Scope and Contents The collection consists of radio broadcast of KCHO public radio, by William H. Hutchison. The topics of California history include geology, geography, Native Americans, explorers, Spanish missions and colonization, rule under Mexico, fur trade, Bear Flag Republic, John Fremont, pioneers, gold and silver mining, timber, agriculture, railroad, iron works, energy, water, resorts and tourism, film industry, aerospace industry, colleges and universities, water, Los Angeles, San Francisco,...