MLA
A. Walker Wearing a Dress and Hat Carrying a Suitcase and Purse Standing in Front of Some Wooden Stairs Leading up to the Door of a House. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 40. https://digital.library.emory.edu/purl/1741rn8pq8-cor.
APA, 6th edition
A. Walker wearing a dress and hat carrying a suitcase and purse standing in front of some wooden stairs leading up to the door of a house (Box 40). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1741rn8pq8-cor.
Chicago
“A. Walker Wearing a Dress and Hat Carrying a Suitcase and Purse Standing in Front of Some Wooden Stairs Leading up to the Door of a House.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 40. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1741rn8pq8-cor.