by Alfred Stieglitz, on mount, upper left verso, in graphite: Series XX / No. 6
by Georgia O'Keeffe, on mount, upper left verso, in graphite: 226-E
Georgia O'Keeffe; gift to NGA, 1949.
- Photographs by Alfred Stieglitz, National Gallery of Art, Washington, February 3–May 8, 1983, no. 151; Metropolitan Museum of Art, New York, June 17–August 14, 1983; The Art Institute of Chicago, October 18, 1983–January 3, 1984.
- Greenough, Sarah, and Juan Hamilton. Alfred Stieglitz: Photographs and Writings. Washington, 1983: no. 151.