Call or write the Grizzly Creek Redwoods State Park office at 707-777-3683 or
16949 Highway 36, Carlotta, California 95528.
The park’s brochure http://www.parks.ca.gov/pages/421/files/GrizzlyCreekSPWeb2011Rev.pdf
contains valuable information on the park’s natural and cultural history as well as tips for planning your visit.
Other good sources are Save the Redwoods League [http://www.savetheredwoods.org/park/grizzly-creek-redwoods-state-park/] (about the park and redwoods in general) and the Humboldt Redwoods Interpretive Association [http://humboldtredwoods.org/](about the region’s natural and cultural history).To go deeper, check out these books:
Johnstone, Peter and Peter E. Palmquist, Giants in the Earth: the California Redwoods, Heyday Books, 2001. Includes an excerpt from L.K. Wood’s Lure of the Humboldt Bay Region, about his and James Van Duzen’s adventures in the region. One memorable passage describes an encounter with five grizzlies.
Margolin, Malcolm and Mariko Conner, Trail Posts: A Literary Exploration of California’s State Parks, Heyday Books, California State Park Foundation, 2014. Features an excerpt from The Legacy of Luna, by Julia Butterfly Hill. The famed activist’s course was set when she took a solo meander among the big trees of Grizzly Creek: “For the first time, I really felt what it was like to be alive, to feel the connection of all life and inherent truth—not the truth that is taught to us by so-called scientists or politicians or other human beings, but the truth that exists within Creation.”
McKinney, John, Day Hiker’s Guide to California Parks, The Trailmaster, 2007.