I don’t know if I’d call her my all time favourite painter, but she definitely paints the most beautiful draft horse I’ve ever seen: Adeline Halvorson.
For those who don’t know her, here are a few examples of her work.
Edit: I can’t figure out how to post pictures, so here’s a link to her website: http://www.adelinehalvorson.com/usa/prints-usa.shtml
PS: This topic was inspired by scenceable mentionning on the Ask Melody forum that a draft horse Windstone would be neat.