Fairfield Osborn Preserve

Fairfield Osborn Preserve was established by The Nature Conservancy in 1972 through the generosity of William and Joan Roth in honor of Joan's father, Fairfield Osborn. The Preserve was donated to Sonoma State University in 1997 for use as an educational and research site. In 2004, William and Joan Roth donated an additional 190 acres to the Preserve, nearly doubling its size, and including the scenic ridgeline of Sonoma Mountain.