MLA
Cotton Industry-- the Last Working : Three African American Men and Two African American Women in a Cotton Field, One Man behind a Plow with Two Horses [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/368kd51c8n-cor.
APA, 6th edition
Cotton industry-- the last working : three African American men and two African American women in a cotton field, one man behind a plow with two horses [hand colored] (Box 68). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51c8n-cor.
Chicago
“Cotton Industry-- the Last Working : Three African American Men and Two African American Women in a Cotton Field, One Man behind a Plow with Two Horses [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51c8n-cor.