MLA
Ward, Richards. Picture of Mayor and Mrs. Slater with a Chimpanzee and a Baby, to Miss Lilly Mai Hubbard. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 49. https://digital.library.emory.edu/purl/549g4f4qx2-cor.
APA, 6th edition
Ward, R. Picture of Mayor and Mrs. Slater with a chimpanzee and a baby, to Miss Lilly Mai Hubbard (Box 49) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qx2-cor.
Chicago
Ward, Richards. “Picture of Mayor and Mrs. Slater with a Chimpanzee and a Baby, to Miss Lilly Mai Hubbard.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 49. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qx2-cor.