MLA
Mitchell, Edward H. One of the Good Things Grown in California. 1907. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/890rr4xh22-cor.
APA, 6th edition
Mitchell, E. H. (1907). One of the good things grown in California (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/890rr4xh22-cor.
Chicago
Mitchell, Edward H. “One of the Good Things Grown in California.” 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/890rr4xh22-cor.