I really don't know but I have provided you the website that is in the state of New Jersey.

North Jersey Equestrian Center, LLC
We have a staff of many outstanding professional riding instructors and an outstanding selection of school horses that range from the quiet beginner, to horses capable of competing at the "A" level. Our specialties...

I really don't know but I have provided you the website that is in the state of New Jersey.

North Jersey Equestrian Center, LLC
We have a staff of many outstanding professional riding instructors and an outstanding selection of school horses that range from the quiet beginner, to horses capable of competing at the "A" level. Our specialties include the disciplines of dressage, hunter, jumpers, and equitation. Group and private lessons are available by appointment six days a week. Our spacious indoor riding arena provides the capability to separate disciplines and levels of ability

To read more about this center just click on this link
http://www.njequestrian.com/

Welcome to the Kentucky Horse Park
http://www.kyhorsepark.com/ind...

Milky Way Farms (Tennessee)
http://www.milkywayfarmstn.com...

(I thought I add this to your list of interest)
The Bob Thomas Equestrian Center is located at the Florida State Fairgrounds and includes exercise grounds, warm-up rings, two show rings, and a grand prix ring. The area was created in the 1970s when the state fair was moved from its original downtown location. The Bob Thomas Equestrian Center features 471 permanent stalls in five barns plus ample parking for vehicles and trailers

http://en.wikipedia.org/wiki/F...