Studio portrait of Bertram Mitchell and Clarence White Thunder (here Big White Thunder), both wearing school uniforms. Photographer: John N. Choate, Carlisle, PAFormat: Glass Plate NegativePeople: Mitchell, BertramBig White ThunderWhite Thunder, ClarenceNation: OmahaSiouxSioux (Wazaza)Time Period: 1880-1889Repository: National Anthropological Archives, Smithsonian InstitutionLocation: NAA 74006; Photo Lot 81-12 06877800