MLA
Co., E. C. Kropp. Negro Cabin, near Savannah, GA : an African American Man and Woman Sitting Outside a Log Cabin [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/97634tmpj9-cor.
APA, 6th edition
Co., E. C. K. Negro cabin, near Savannah, GA : an African American man and woman sitting outside a log cabin [hand colored] (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/97634tmpj9-cor.
Chicago
Co., E. C. Kropp. “Negro Cabin, near Savannah, GA : an African American Man and Woman Sitting Outside a Log Cabin [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/97634tmpj9-cor.