MLA
Co., E. C. Kropp. Taking Life Easy-down in Sunny Dixie : Four African American Children Sitting, Two of Them on the Ground Eating Something out of a Pot with Spoons. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/187pnvx0mv-cor.
APA, 6th edition
Co., E. C. K. Taking life easy-down in sunny Dixie : four African American children sitting, two of them on the ground eating something out of a pot with spoons (Box 72) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/187pnvx0mv-cor.
Chicago
Co., E. C. Kropp. “Taking Life Easy-down in Sunny Dixie : Four African American Children Sitting, Two of Them on the Ground Eating Something out of a Pot with Spoons.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/187pnvx0mv-cor.