MLA
Museum of Fine Arts, Boston. Boxers : an African American Man and Another Boxing with a Crowd Watching. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/706g1jwsxd-cor.
APA, 6th edition
Museum of Fine Arts, B. Boxers : an African American man and another boxing with a crowd watching (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/706g1jwsxd-cor.
Chicago
Fine Arts, Boston. Museum of. “Boxers : an African American Man and Another Boxing with a Crowd Watching.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/706g1jwsxd-cor.