MLA
Co., Albertype. Three African American Boys Wearing Hats and Smiling. 1905. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/511xd2549g-cor.
APA, 6th edition
Co., A. (1905). Three African American boys wearing hats and smiling (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2549g-cor.
Chicago
Co., Albertype. “Three African American Boys Wearing Hats and Smiling.” Postcards. Robert Langmuir African American Photograph Collection, 1905. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2549g-cor.