MLA
Morris, Eastman Dealers F. S., and Co. An African American Woman in a Dress Sitting on a Rock, with an Ocean Backdrop. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/924wh70s1r-cor.
APA, 6th edition
Morris, E. D. F. S., & C. An African American woman in a dress sitting on a rock, with an ocean backdrop (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70s1r-cor.
Chicago
Morris, Eastman Dealers F. S., and Co. “An African American Woman in a Dress Sitting on a Rock, with an Ocean Backdrop.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70s1r-cor.