MLA
Lilian o_ Jack. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/0515mkkwkb-cor.
APA, 6th edition
Lilian o_ Jack (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkwkb-cor.
Chicago
“Lilian o_ Jack.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkwkb-cor.