Studio portrait of Frank Lock. People Lock, Frank Nation Sioux Sioux (Oglala) Sioux (White Clay) Time Period 1880-1889 Repository National Anthropological Archives, Smithsonian Institution Location NAA 74405; Photo Lot 81-12 06917700 Related Images Frank Lock [version 2], c.1888 Format Glass Plate Negative Photographer John N. Choate, Carlisle, PA