by Georgia O'Keeffe, on mount, upper left verso, in graphite: 227E
by later hand, on mount, lower right verso, in graphite: D
Georgia O'Keeffe; gift to NGA, 1949.
- Alfred Stieglitz: Known and Unknown, National Gallery of Art, Washington; The Museum of Fine Arts, Houston, 2002-2003.
- "Alfred Stieglitz: Known and Unknown", The Museum of Fine Arts, Houston, 2002-2003, as Equivalent.
- "Visual Music", The Museum of Contemporary Art, Los Angeles; Hirshhorn Museum and Sculpture Garden, Washington, 2005.