Thank you for the kind comments. Ming is 1/2 Morgan, 1/2 Appaloosa. She has one tiny white spot on her left shoulder that I'm forever trying to brush off. That's about all the white on her body, other than the white at her coronets, which also have black spots on them. Different. She looks very brown in the picture, but in life, she looks almost black. A dark, dark bay.
I don't know that there are many carriages indiginous to the U.S. The Conestoga Wagon (that made up the "wagon trains" of the early settlers) and the Red River cart (an ox or human cart).