MLA
Howe, F. L. Ole Mammy' : an Older African American Woman in an Apron, Carrying a Basket on Her Arm. 1901. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/047rn8pk2g-cor.
APA, 6th edition
Howe, F. L. (1901). Ole Mammy' : an older African American woman in an apron, carrying a basket on her arm (Box 73) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pk2g-cor.
Chicago
Howe, F. L. “Ole Mammy' : an Older African American Woman in an Apron, Carrying a Basket on Her Arm.” Postcards. Robert Langmuir African American Photograph Collection, 1901. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pk2g-cor.