Joseph T. Keiley (1869–1914), Zitkala-Ša or Gertrude Simmons Bonnin (Dakota, 1876–1938), 1898. Glycerine-developed platinum print. National Portrait Gallery, Smithsonian Institution. NPG.2006.10
Although Joseph Keiley used the softness of the platinum print to create a portrait that is painterly, wistful, and even sensual, his sitter, Zitkala-Ša, was in fact a college-educated American Indian violinist who went on to be an outspoken activist and author.
