MLA
Lorberg, H. A. Five African American Children Eating Watermelon. 1910. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/6451g1jwz1-cor.
APA, 6th edition
Lorberg, H. A. (1910). Five African American children eating watermelon (Box 69) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jwz1-cor.
Chicago
Lorberg, H. A. “Five African American Children Eating Watermelon.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1910. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jwz1-cor.