Studio portrait of Arnold Woolworth (left) and Casper Edson (right). People Woolworth, Arnold Edson, Casper Nation Arapaho Time Period 1880-1889 Repository National Anthropological Archives, Smithsonian Institution Location NAA 74200; Photo Lot 81-12 068971000 Related Images Arnold Woolworth and Casper Edson [version 2], c.1885 Format Glass Plate Negative Photographer John N. Choate, Carlisle, PA