MLA
Louis Kaufmann & Sons (Baltimore, Md.). Mansion House, Hampton Institute, Hampton, VA. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv18m-cor.
APA, 6th edition
Louis Kaufmann & Sons (Baltimore, Md.). (unknown)[Mansion House, Hampton Institute, Hampton, VA]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv18m-cor.
Chicago
Louis Kaufmann & Sons (Baltimore, Md.), Mansion House, Hampton Institute, Hampton, VA, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv18m-cor.