California Codes: https://leginfo.legislature.ca.gov/faces/codes.xhtml
Here you will find statutory laws passed by the California state legislature, including enacted session laws, senate bills and assembly bills.
American Association of Equine Practitioners: http://www.aaep.org/
The AAEP is the world's largest professional organization dedicated to equine veterinary medicine and is a leading medical authority on the health and welfare of the horse.
United States Pony Club Safety Booklet: https://www.ponyclub.org/ContentDocs/Volunteers/Safety/2016%20Safety%20Booklet.pdf?1
The United States Pony Club has been a leader in incorporating safety into all aspects of horsemanship. This booklet is a quick read with helpful safety reminders.
American Horse Council: www.horsecouncil.org
As the national association representing all segments of the horse industry in Washington, D.C., the American Horse Council (AHC) works to represent Equine interests and opportunities. The AHC promotes and protects all horse breeds, disciplines and interests by communicating with Congress, federal agencies, the media and the industry itself.
United States Equestrian Federation: https://www.usef.org
Equestrian competitors, leisure riders, coaches, fans and enthusiasts each share a personal bond with the horse. This commonality defines the membership of the United States Equestrian Federation (USEF), which serves as the National Governing Body for equestrian sport.