by Georgia O'Keeffe, on mount, lower left verso, in graphite: 87A
Georgia O'Keeffe; gift to NGA, 1949.
- McCabe, Constance, and Lisha Deming Glinsman. "Understanding Alfred Stieglitz' Platinum and Palladium Prints: Examination by X-ray Fluorescence Spectrometry." Studies in the History of Art 51: Conservation Research 1995. Washington, D.C., 1995: fig.15.