Dr. Who, again I respectfully disagree with the bolded. Morgans are typically small and muscular horses, developed here in the U.S. Here's a movie that illustrates the foundation of the breed.
http://www.imdb.com/title/tt0068789/
FWIW, I have managed local shows for Arabians and Morgans. In fact, a dear friend of mine breeds and shows Morgans here in Central Texas.
Her late stallion, Contender, was a Reserve National Stallion driving horse. Additionally, a friend of mine in Washington state trains and shows Morgans: Timber Creek Stables.