1. Alfred Stieglitz / Georgia O’Keeffe Archive, Beinecke Rare Book and Manuscript Library, Yale University.
2. Brownlee, Lucie Alexandra. “The Sculptress: A Work of Creative Non-fiction.” Ph.D. thesis, Newcastle University, 2018.
3. Campsie, Philippa. “Mary Callery, Sculptor and Collector.” 16 October 2011. https://parisianfields.com/2011/10/16/mary-callery-sculptor-and-collector/.
4. Danly, Susan. “Miss O’Keeffe”—Photography and Fame,” 7–41. In Georgia O’Keeffe and the Camera: The Art of Identity. New Haven, CT: Yale University Press/Portland Museum of Art, Maine, 2008.
5. Drohojowska-Philp, Hunter. Full Bloom: The Art and Life of Georgia O’Keeffe. New York: W.W. Norton and Company, 2004.