http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
story of the Petrified Forest, Ginkgo State Park, Washington
Washington State Parks and Recreation Commission
Includes bibliographical references (page 16).
The Al Stonestreet Parks and Recreation Collection, 1997.
Ginkgo Petrified Forest State Park (Wash.)