MLA
Old Man with Two Boys Standing next to Tree. 1902. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 13. https://digital.library.emory.edu/purl/972p5hqc55-cor.
APA, 6th edition
Old man with two boys standing next to tree (Box 13). (1902). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqc55-cor.
Chicago
“Old Man with Two Boys Standing next to Tree.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, 1902. Box 13. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqc55-cor.