MLA
Teich, Curt, and Co. Greetings from Eufaula, Alabama : Four African American Boys, Who Are Barefoot, Sitting on the Ground [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/0106wwpzj3-cor.
APA, 6th edition
Teich, C., & C. Greetings from Eufaula, Alabama : four African American boys, who are barefoot, sitting on the ground [hand colored] (Box 72) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwpzj3-cor.
Chicago
Teich, Curt, and Co. “Greetings from Eufaula, Alabama : Four African American Boys, Who Are Barefoot, Sitting on the Ground [Hand Colored].” 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/0106wwpzj3-cor.