MLA
Co., E. C. Kropp. Love in a Hut : an Older African American Man and Woman Sitting on Steps. 1906. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/26663xsj5v-cor.
APA, 6th edition
Co., E. C. K. (1906). Love in a hut : an older African American man and woman sitting on steps (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/26663xsj5v-cor.
Chicago
Co., E. C. Kropp. “Love in a Hut : an Older African American Man and Woman Sitting on Steps.” Postcards. Robert Langmuir African American Photograph Collection, 1906. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/26663xsj5v-cor.