MLA
Howe, F. L. In Dixie Lan' De Lan' o' Cotton : African American Men and African American Women Picking Cotton with Baskets of Cotton, with an African American Man on Horseback and African American Men Loading Cotton onto a Wagon [Hand Colored]. 1899. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/969866t1kw-cor.
APA, 6th edition
Howe, F. L. (1899). In Dixie lan' de lan' o' cotton : African American men and African American women picking cotton with baskets of cotton, with an African American man on horseback and African American men loading cotton onto a wagon [hand colored] (Box 68) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1kw-cor.
Chicago
Howe, F. L. “In Dixie Lan' De Lan' o' Cotton : African American Men and African American Women Picking Cotton with Baskets of Cotton, with an African American Man on Horseback and African American Men Loading Cotton onto a Wagon [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, 1899. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1kw-cor.