MLA
Co., E. C. Kropp. Ostrich Farm. 1909. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/238w9ghx5s-cor.
APA, 6th edition
Co., E. C. K. (1909). Ostrich farm (Box 73) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/238w9ghx5s-cor.
Chicago
Co., E. C. Kropp. “Ostrich Farm.” Postcards. Robert Langmuir African American Photograph Collection, 1909. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/238w9ghx5s-cor.