| equestrian.org | United States Equestrian Federation |
| horse-country.com | Pacific Northwest Junior Riders |
| hbpa.org | National Horseman's Benevolent and Protective Association |
| usmountedgames.org | United States Mounted Games Association | USMGA |
| oldpeoplesridingclub.org | Old People's Riding Club |
| nsba.com | National Snaffle Bit Association |
| narcsp.org | National Association of Riding Clubs and Sheriff Posses |
| horsemensunited.com | Horsemen's United Association |
| usef.org | United States Equestrian Federation |
| usdf.org | United States Dressage Federation |
United States , Virginia , Herndon