I recently came back from Arizona and was impressed by Yellowhorse Knives and the Heard Indian Art and History Museum. Yellowhorse is a trademark and from knives I have seen are David, Dave, Ron, Steve, and Brian of the same last name. The Heard gave in depth history of Indian art used in jewelry which parallels the family's art. The way that their work captures Arizona's rugged beauty is impressive. The Yellowhorse family have served in war for the United States and make a living from the sparce landscape. They will be around for a long time.