MLA
Allgood, Susie W. Coming Events Cast Their Shadows : African American Men, Women and Children Standing Outside a Wood Dwelling. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/730bvq83fx-cor.
APA, 6th edition
Allgood, S. W. Coming events cast their shadows : African American men, women and children standing outside a wood dwelling (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/730bvq83fx-cor.
Chicago
Allgood, Susie W. “Coming Events Cast Their Shadows : African American Men, Women and Children Standing Outside a Wood Dwelling.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/730bvq83fx-cor.