MLA
Cornish, George B. I Love My Chicken, but Oh You Turkey : an African American Boy Holding a Turkey. 1907. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/4988gthtb6-cor.
APA, 6th edition
Cornish, G. B. (1907). I love my chicken, but oh you turkey : an African American boy holding a turkey (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4988gthtb6-cor.
Chicago
Cornish, George B. “I Love My Chicken, but Oh You Turkey : an African American Boy Holding a Turkey.” Postcards. Robert Langmuir African American Photograph Collection, 1907. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4988gthtb6-cor.