MLA
Marchant, F. Home from the 'Possum Hunt' : an African American Man Holding an Opposum on a Stick. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/965v6wwq32-cor.
APA, 6th edition
Marchant, F. Home from the 'Possum hunt' : an African American man holding an opposum on a stick (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/965v6wwq32-cor.
Chicago
Marchant, F. “Home from the 'Possum Hunt' : an African American Man Holding an Opposum on a Stick.” 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/965v6wwq32-cor.