(The Downtown Gallery, New York, N.Y.) Dorothy Braude Edinburg, Boston, 1955; gift to the National Gallery of Art, 1978.
- NGA Master Drawings 1978, p. 120.
- Graphic Survey Show, National Gallery of Art, Washington D.C., 1986-1987.
- Georgia O'Keeffe: The Poetry of Things, The Phillips Collection, Washington, 1999, as Shell.
- O'Keeffe on Paper, National Gallery of Art, Washington, D.C., 9 April-9 July 2000; The Georgia O'Keeffe Museum, Santa Fe, 29 July-29 October 2000, 50-51. no. 45.
- Lynes, Barbara Buhler. Georgia O'Keeffe: Catalogue Raisonné. 2 vols. New Haven and London, 1999, no. 827.
- Fine, Ruth et al. O'Keeffe on Paper. Exh. cat. National Gallery of Art, Washington, DC; Georgia O'Keeffe Museum, Santa Fe, 2000: no. 45.