by Georgia O'Keeffe, on mount, upper left verso, in graphite: OK 513C
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.
- Two Lives: A Conversation in Paintings and Photographs (Washington, 1992), 33.
- Greenough 2002, cat. 536.