August 2, 1991 — September 1, 1991 Shadowy Evidence: The Photography Of Edward S. Curtis And His Contemporaries Curated by: Rod Slemmons Supported by the Canada Council. Events August 15, 7:30 p.m. | Lecture by Rod Slemmons Poster for the exhibition "Shadowy Evidence: The Photography of Edward S. Curtis and his Contemporaries" Sharp Horn Bull, Sioux, North Dakota. c. 1904 Wauxi Haury, Before and After page in the Carlisle Indian School Album. c. 1895. "Old person", Piegan, 1911.