MLA
Fourth Biennial Convention of the Brotherhood of Sleeping Car Porters. 1944. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 56. https://digital.library.emory.edu/purl/3483j9kd97-cor.
APA, 6th edition
Fourth Biennial Convention of the Brotherhood of Sleeping Car Porters (Box 56). (1944). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kd97-cor.
Chicago
“Fourth Biennial Convention of the Brotherhood of Sleeping Car Porters.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1944. Box 56. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kd97-cor.