by Georgia O'Keeffe, on mount, lower left verso, in graphite: OK 8E
Georgia O'Keeffe; gift to NGA, 1980.
- Two Lives: A Conversation in Paintings and Photographs, The Phillips Collection, Washington, D.C.; I.B.M. Gallery, New York, 1992.
- Alfred Stieglitz: Known and Unknown, National Gallery of Art, Washington; The Museum of Fine Arts, Houston, 2002-2003, as Georgia O'Keeffe.
- Georgia O'Keeffe, Tate Modern, London; Bank Austria Kunstforum, Vienna; Art Gallery of Ontario, Toronto, 2016 - 2017, unnumbered catalogue.
- Two Lives: A Conversation in Paintings and Photographs. New York, 1992: p. 112.