Mariposa County: Home site of the Mariposa Chamber of Commerce and the Mariposa Economic Development Corporation. Site includes links to government and other visitor information.
Mariposa County Genweb: Mariposa County branch of the California Genweb Project offers county history and genealogy search help. Includes photos and databases maintained by volunteers.
Mariposa County Library: County library with branches in Mariposa, Coulterville, El Portal, and Wawona. Features include online catalog and magazine search and book renewal. Includes historic photo gallery.