MLA
Sweet Contentment : an African American Woman Holding a Ladle, Standing Outside a Log Cabin and an African American Man Sitting [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/470zpc868m-cor.
APA, 6th edition
Sweet contentment : an African American woman holding a ladle, standing outside a log cabin and an African American man sitting [hand colored] (Box 71). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/470zpc868m-cor.
Chicago
“Sweet Contentment : an African American Woman Holding a Ladle, Standing Outside a Log Cabin and an African American Man Sitting [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/470zpc868m-cor.