MLA
Popular Photo Co. (Poughkeepsie, N.Y.). Five pictures of an African American woman in a dress wearing various hats in three pictures, no hat in two and with a flag behind her head in one without a hat. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk0tq-cor.
APA, 6th edition
Popular Photo Co. (Poughkeepsie, N.Y.). (unknown)[Five pictures of an African American woman in a dress wearing various hats in three pictures, no hat in two and with a flag behind her head in one without a hat]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk0tq-cor.
Chicago
Popular Photo Co. (Poughkeepsie, N.Y.), Five pictures of an African American woman in a dress wearing various hats in three pictures, no hat in two and with a flag behind her head in one without a hat, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk0tq-cor.