In 2009, PBS broadcasted Ken Burns's six-part documentary series National Parks: America's Best Idea. Almost a decade later, PBS's companion website continues to host a wealth of materials about the history of U.S. national parks, including this searchable collection of over 800 multimedia documents. This collection includes newspaper articles, historic photographs, correspondence, and clips from the documentary (which can be viewed with Adobe Flash). Visitors are invited to browse these images by park (from Arcadia to Zion), by era, or by person (featuring photographer Ansel Adams, artist Chiura Obata, reporter Juanita Greene, and many others). As a whole, this collection offers a wealth of material for teaching and learning about the history of national parks in the United States.