El Dorado County Farm Trails
- An association of farmers and ranchers dedicated to preserving the county's rural qualities. Site provides maps and contact information for touring.
- http://www.edc-farmtrails.org/

Apple Hill Growers Association
- Over 50 farms and ranches, including fruits and other produce, Christmas tree growers, wineries and vineyards. Most growers have produce stands, small shops, or cafes. Site includes tour map.
- http://www.applehill.com/

Apple Hill
- Brief description and photographs of Apple Hill area, where many farms and orchards are located.
- http://comspark.com/eldorado/applehill.shtml