MLA
Huld, Franz. African American Woman Plowing a Field Using a Horse [Hand Colored]. 1898. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/204rjdfn5c-cor.
APA, 6th edition
Huld, F. (1898). African American woman plowing a field using a horse [hand colored] (Box 68) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/204rjdfn5c-cor.
Chicago
Huld, Franz. “African American Woman Plowing a Field Using a Horse [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, 1898. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/204rjdfn5c-cor.