Harvey Pratt in Da Nang, Vietnam. Pratt, the designer whose concept was selected to create the Smithsonian’s National Native American Veterans Memorial for the National Museum of the American Indian is a Cheyenne and Arapaho tribal member. He is a self-taught artist from Oklahoma and a forensic artist. Pratt works in oil, watercolor, metal, clay and wood. His works include themes of Native American history and tradition and the Cheyenne people. - Harvey Pratt in Da Nang, Vietnam. Pratt, the designer whose concept was selected to create the Smithsonian’s National Native American Veterans Memorial for the National Museum of the American Indian is a Cheyenne and Arapaho tribal member. He is a self-taught artist from Oklahoma and a forensic artist. Pratt works in oil, watercolor, metal, clay and wood. His works include themes of Native American history and tradition and the Cheyenne people.