MLA
Davis, G. W. John Mansfield Sims, Grandfather of Helen & George Born in Philadelphia, Pa. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 61. https://digital.library.emory.edu/purl/969866t1k4-cor.
APA, 6th edition
Davis, G. W. John Mansfield Sims, grandfather of Helen & George born in Philadelphia, Pa. (Box 61) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1k4-cor.
Chicago
Davis, G. W. “John Mansfield Sims, Grandfather of Helen & George Born in Philadelphia, Pa.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 61. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1k4-cor.